80537621040 has 240 divisors, whose sum is σ = 301455928800. Its totient is φ = 19149447168.

The previous prime is 80537620997. The next prime is 80537621051. The reversal of 80537621040 is 4012673508.

80537621040 is a `hidden beast` number, since 80 + 537 + 6 + 2 + 1 + 0 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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 = 80537620986 and 80537621004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 59406 + ... + 405714.

It is an arithmetic number, because the mean of its divisors is an integer number (1256066370).

Almost surely, 2^80537621040 is an apocalyptic number.

80537621040 is a gapful number since it is divisible by the number (80) 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 80537621040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150727964400).

80537621040 is an abundant number, since it is smaller than the sum of its proper divisors (220918307760).

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

80537621040 is a wasteful number, since it uses less digits than its factorization.

80537621040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346364 (or 346355 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The spelling of 80537621040 in words is "eighty billion, five hundred thirty-seven million, six hundred twenty-one thousand, forty".