80816820138252 has 48 divisors (see below), whose sum is σ = 228572824636800. Its totient is φ = 24489945496080.

The previous prime is 80816820138211. The next prime is 80816820138281. The reversal of 80816820138252 is 25283102861808.

80816820138252 is a `hidden beast` number, since 8 + 0 + 8 + 1 + 6 + 8 + 201 + 382 + 52 = 666.

It is a super-3 number, since 3×80816820138252³ (a number of 43 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34013812002 + ... + 34013814377.

It is an arithmetic number, because the mean of its divisors is an integer number (4761933846600).

Almost surely, 2^{80816820138252} is an apocalyptic number.

It is an amenable number.

80816820138252 is an abundant number, since it is smaller than the sum of its proper divisors (147756004498548).

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

80816820138252 is a wasteful number, since it uses less digits than its factorization.

80816820138252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68027626403 (or 68027626395 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 54.

The spelling of 80816820138252 in words is "eighty trillion, eight hundred sixteen billion, eight hundred twenty million, one hundred thirty-eight thousand, two hundred fifty-two".