215235671040 has 704 divisors, whose sum is σ = 828926918400. Its totient is φ = 52648869888.

The previous prime is 215235671011. The next prime is 215235671051. The reversal of 215235671040 is 40176532512.

215235671040 is a `hidden beast` number, since 2 + 1 + 52 + 3 + 567 + 1 + 0 + 40 = 666.

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 = 215235670986 and 215235671004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 411540219 + ... + 411540741.

Almost surely, 2^215235671040 is an apocalyptic number.

215235671040 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 215235671040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (414463459200).

215235671040 is an abundant number, since it is smaller than the sum of its proper divisors (613691247360).

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

215235671040 is a wasteful number, since it uses less digits than its factorization.

215235671040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799 (or 775 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The spelling of 215235671040 in words is "two hundred fifteen billion, two hundred thirty-five million, six hundred seventy-one thousand, forty".