72400775570415 has 36 divisors (see below), whose sum is σ = 132447291405624. Its totient is φ = 36581444490528.

The previous prime is 72400775570381. The next prime is 72400775570423. The reversal of 72400775570415 is 51407557700427.

72400775570415 is a `hidden beast` number, since 7 + 2 + 4 + 0 + 0 + 77 + 557 + 0 + 4 + 15 = 666.

72400775570415 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 72400775570415 - 2¹² = 72400775566319 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2228385589 + ... + 2228418078.

It is an arithmetic number, because the mean of its divisors is an integer number (3679091427934).

Almost surely, 2^{72400775570415} is an apocalyptic number.

72400775570415 is a deficient number, since it is larger than the sum of its proper divisors (60046515835209).

72400775570415 is a wasteful number, since it uses less digits than its factorization.

72400775570415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4456803716 (or 4456803694 counting only the distinct ones).

The product of its (nonzero) digits is 9604000, while the sum is 54.

The spelling of 72400775570415 in words is "seventy-two trillion, four hundred billion, seven hundred seventy-five million, five hundred seventy thousand, four hundred fifteen".