78152260517354 has 4 divisors (see below), whose sum is σ = 117228390776034. Its totient is φ = 39076130258676.

The previous prime is 78152260517333. The next prime is 78152260517389. The reversal of 78152260517354 is 45371506225187.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 60940739667025 + 17211520850329 = 7806455^2 + 4148677^2 .

It is a super-2 number, since 2×78152260517354² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78152260517354.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19538065129337 + ... + 19538065129340.

Almost surely, 2^{78152260517354} is an apocalyptic number.

78152260517354 is a deficient number, since it is larger than the sum of its proper divisors (39076130258680).

78152260517354 is a wasteful number, since it uses less digits than its factorization.

78152260517354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39076130258679.

The product of its (nonzero) digits is 14112000, while the sum is 56.

The spelling of 78152260517354 in words is "seventy-eight trillion, one hundred fifty-two billion, two hundred sixty million, five hundred seventeen thousand, three hundred fifty-four".