797680540440 has 256 divisors, whose sum is σ = 3090289536000. Its totient is φ = 179236592640.

The previous prime is 797680540337. The next prime is 797680540477. The reversal of 797680540440 is 44045086797.

797680540440 is a `hidden beast` number, since 7 + 9 + 76 + 80 + 54 + 0 + 440 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 448141 + ... + 1340220.

It is an arithmetic number, because the mean of its divisors is an integer number (12071443500).

Almost surely, 2^797680540440 is an apocalyptic number.

797680540440 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

797680540440 is an abundant number, since it is smaller than the sum of its proper divisors (2292608995560).

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

797680540440 is a wasteful number, since it uses less digits than its factorization.

797680540440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788447 (or 1788437 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 797680540440 in words is "seven hundred ninety-seven billion, six hundred eighty million, five hundred forty thousand, four hundred forty".