78213700724425 has 24 divisors (see below), whose sum is σ = 110933840261952. Its totient is φ = 53586839208000.

The previous prime is 78213700724407. The next prime is 78213700724447. The reversal of 78213700724425 is 52442700731287.

It is not a de Polignac number, because 78213700724425 - 2³³ = 78205110789833 is a prime.

It is a super-2 number, since 2×78213700724425² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 189012391 + ... + 189425740.

It is an arithmetic number, because the mean of its divisors is an integer number (4622243344248).

Almost surely, 2^{78213700724425} is an apocalyptic number.

It is an amenable number.

78213700724425 is a deficient number, since it is larger than the sum of its proper divisors (32720139537527).

78213700724425 is a wasteful number, since it uses less digits than its factorization.

78213700724425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378439329 (or 378439324 counting only the distinct ones).

The product of its (nonzero) digits is 5268480, while the sum is 52.

The spelling of 78213700724425 in words is "seventy-eight trillion, two hundred thirteen billion, seven hundred million, seven hundred twenty-four thousand, four hundred twenty-five".