78354963952 has 40 divisors (see below), whose sum is σ = 155554488320. Its totient is φ = 38214348480.

The previous prime is 78354963941. The next prime is 78354963977. The reversal of 78354963952 is 25936945387.

It is a super-2 number, since 2×78354963952² (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 7 ways as a sum of consecutive naturals, for example, 431377 + ... + 585487.

It is an arithmetic number, because the mean of its divisors is an integer number (3888862208).

Almost surely, 2^78354963952 is an apocalyptic number.

It is an amenable number.

78354963952 is a deficient number, since it is larger than the sum of its proper divisors (77199524368).

78354963952 is a wasteful number, since it uses less digits than its factorization.

78354963952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154901 (or 154895 counting only the distinct ones).

The product of its digits is 48988800, while the sum is 61.

The spelling of 78354963952 in words is "seventy-eight billion, three hundred fifty-four million, nine hundred sixty-three thousand, nine hundred fifty-two".