215680937048892 has 360 divisors, whose sum is σ = 668519493366816. Its totient is φ = 58513537539072.

The previous prime is 215680937048887. The next prime is 215680937048909. The reversal of 215680937048892 is 298840739086512.

215680937048892 is a `hidden beast` number, since 2 + 1 + 56 + 8 + 0 + 9 + 3 + 7 + 0 + 488 + 92 = 666.

It is a super-2 number, since 2×215680937048892² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215680937048892.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 271963888 + ... + 272755784.

It is a 1-persistent number, because it is pandigital, but 2⋅215680937048892 = 431361874097784 is not.

Almost surely, 2^{215680937048892} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215680937048892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (334259746683408).

215680937048892 is an abundant number, since it is smaller than the sum of its proper divisors (452838556317924).

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

215680937048892 is a wasteful number, since it uses less digits than its factorization.

215680937048892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792095 (or 792069 counting only the distinct ones).

The product of its (nonzero) digits is 418037760, while the sum is 72.

The spelling of 215680937048892 in words is "two hundred fifteen trillion, six hundred eighty billion, nine hundred thirty-seven million, forty-eight thousand, eight hundred ninety-two".