104145772657520 has 80 divisors (see below), whose sum is σ = 264848521288320. Its totient is φ = 37771265952000.

The previous prime is 104145772657513. The next prime is 104145772657529. The reversal of 104145772657520 is 25756277541401.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104145772657529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155797706 + ... + 156464745.

It is an arithmetic number, because the mean of its divisors is an integer number (3310606516104).

Almost surely, 2^{104145772657520} is an apocalyptic number.

104145772657520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

104145772657520 is an abundant number, since it is smaller than the sum of its proper divisors (160702748630800).

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

104145772657520 is a wasteful number, since it uses less digits than its factorization.

104145772657520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312262854 (or 312262848 counting only the distinct ones).

The product of its (nonzero) digits is 16464000, while the sum is 56.

The spelling of 104145772657520 in words is "one hundred four trillion, one hundred forty-five billion, seven hundred seventy-two million, six hundred fifty-seven thousand, five hundred twenty".