215674653348 has 384 divisors, whose sum is σ = 722856960000. Its totient is φ = 53961223680.

The previous prime is 215674653301. The next prime is 215674653349. The reversal of 215674653348 is 843356476512.

215674653348 is a `hidden beast` number, since 2 + 1 + 5 + 67 + 4 + 6 + 533 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 215674653294 and 215674653303.

It is not an unprimeable number, because it can be changed into a prime (215674653349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 144456490 + ... + 144457982.

It is an arithmetic number, because the mean of its divisors is an integer number (1882440000).

Almost surely, 2^215674653348 is an apocalyptic number.

215674653348 is a gapful number since it is divisible by the number (28) 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 215674653348, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361428480000).

215674653348 is an abundant number, since it is smaller than the sum of its proper divisors (507182306652).

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

215674653348 is a wasteful number, since it uses less digits than its factorization.

215674653348 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152 (or 2144 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 54.

The spelling of 215674653348 in words is "two hundred fifteen billion, six hundred seventy-four million, six hundred fifty-three thousand, three hundred forty-eight".