78758641352 has 32 divisors (see below), whose sum is σ = 160172714520. Its totient is φ = 36158914560.

The previous prime is 78758641337. The next prime is 78758641361. The reversal of 78758641352 is 25314685787.

It can be written as a sum of positive squares in 4 ways, for example, as 45542120836 + 33216520516 = 213406^2 + 182254^2 .

It is a super-2 number, since 2×78758641352² (a number of 23 digits) contains 22 as substring.

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, 7056713 + ... + 7067864.

Almost surely, 2^78758641352 is an apocalyptic number.

It is an amenable number.

78758641352 is an abundant number, since it is smaller than the sum of its proper divisors (81414073168).

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

78758641352 is a wasteful number, since it uses less digits than its factorization.

78758641352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14124641 (or 14124637 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 56.

The spelling of 78758641352 in words is "seventy-eight billion, seven hundred fifty-eight million, six hundred forty-one thousand, three hundred fifty-two".