78734614457885 has 8 divisors (see below), whose sum is σ = 97529328877056. Its totient is φ = 60955830547920.

The previous prime is 78734614457869. The next prime is 78734614458029. The reversal of 78734614457885 is 58875441643787.

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

It is not a de Polignac number, because 78734614457885 - 2⁴ = 78734614457869 is a prime.

It is a Duffinian number.

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, 253982627129 + ... + 253982627438.

It is an arithmetic number, because the mean of its divisors is an integer number (12191166109632).

Almost surely, 2^{78734614457885} is an apocalyptic number.

It is an amenable number.

78734614457885 is a deficient number, since it is larger than the sum of its proper divisors (18794714419171).

78734614457885 is a wasteful number, since it uses less digits than its factorization.

78734614457885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 507965254603.

The product of its digits is 5057740800, while the sum is 77.

The spelling of 78734614457885 in words is "seventy-eight trillion, seven hundred thirty-four billion, six hundred fourteen million, four hundred fifty-seven thousand, eight hundred eighty-five".