78225200478 has 24 divisors (see below), whose sum is σ = 169500069648. Its totient is φ = 26073199872.

The previous prime is 78225200441. The next prime is 78225200483. The reversal of 78225200478 is 87400252287.

78225200478 is a `hidden beast` number, since 7 + 82 + 2 + 520 + 0 + 47 + 8 = 666.

It is a super-2 number, since 2×78225200478² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115575 + ... + 412077.

It is an arithmetic number, because the mean of its divisors is an integer number (7062502902).

Almost surely, 2^78225200478 is an apocalyptic number.

78225200478 is an abundant number, since it is smaller than the sum of its proper divisors (91274869170).

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

78225200478 is a wasteful number, since it uses less digits than its factorization.

78225200478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311168 (or 311165 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 45.

The spelling of 78225200478 in words is "seventy-eight billion, two hundred twenty-five million, two hundred thousand, four hundred seventy-eight".