215151674040 has 128 divisors (see below), whose sum is σ = 717987628800. Its totient is φ = 57308549760.

The previous prime is 215151674039. The next prime is 215151674041. The reversal of 215151674040 is 40476151512.

215151674040 is a `hidden beast` number, since 2 + 1 + 515 + 1 + 67 + 40 + 40 = 666.

It is an interprime number because it is at equal distance from previous prime (215151674039) and next prime (215151674041).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 215151673986 and 215151674004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215151674041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 840835 + ... + 1066445.

It is an arithmetic number, because the mean of its divisors is an integer number (5609278350).

Almost surely, 2^215151674040 is an apocalyptic number.

215151674040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215151674040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (358993814400).

215151674040 is an abundant number, since it is smaller than the sum of its proper divisors (502835954760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215151674040 is a wasteful number, since it uses less digits than its factorization.

215151674040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226514 (or 226504 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 215151674040 in words is "two hundred fifteen billion, one hundred fifty-one million, six hundred seventy-four thousand, forty".