78280525951 has 8 divisors (see below), whose sum is σ = 78544668384. Its totient is φ = 78016473600.

The previous prime is 78280525943. The next prime is 78280526017. The reversal of 78280525951 is 15952508287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78280525951 - 2³ = 78280525943 is a prime.

It is a super-2 number, since 2×78280525951² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78280525751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2031375 + ... + 2069551.

It is an arithmetic number, because the mean of its divisors is an integer number (9818083548).

Almost surely, 2^78280525951 is an apocalyptic number.

78280525951 is a deficient number, since it is larger than the sum of its proper divisors (264142433).

78280525951 is a wasteful number, since it uses less digits than its factorization.

78280525951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45041.

The product of its (nonzero) digits is 2016000, while the sum is 52.

The spelling of 78280525951 in words is "seventy-eight billion, two hundred eighty million, five hundred twenty-five thousand, nine hundred fifty-one".