80628851574 has 72 divisors (see below), whose sum is σ = 190418702520. Its totient is φ = 25284197376.

The previous prime is 80628851549. The next prime is 80628851579. The reversal of 80628851574 is 47515882608.

80628851574 is a `hidden beast` number, since 8 + 0 + 62 + 8 + 8 + 5 + 1 + 574 = 666.

It is a super-2 number, since 2×80628851574² (a number of 23 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 80628851574.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80628851579) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35471302 + ... + 35473574.

Almost surely, 2^80628851574 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80628851574, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95209351260).

80628851574 is an abundant number, since it is smaller than the sum of its proper divisors (109789850946).

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

80628851574 is an equidigital number, since it uses as much as digits as its factorization.

80628851574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4591 (or 2295 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 54.

Multiplying 80628851574 by its sum of digits (54), we get a square (4353957984996 = 2086614²).

80628851574 divided by its sum of digits (54) gives a square (1493126881 = 38641²).

The spelling of 80628851574 in words is "eighty billion, six hundred twenty-eight million, eight hundred fifty-one thousand, five hundred seventy-four".