78526507023 has 64 divisors (see below), whose sum is σ = 122036544000. Its totient is φ = 49840745472.

The previous prime is 78526507021. The next prime is 78526507051. The reversal of 78526507023 is 32070562587.

78526507023 is a `hidden beast` number, since 7 + 8 + 526 + 50 + 70 + 2 + 3 = 666.

It is not a de Polignac number, because 78526507023 - 2¹ = 78526507021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 78526507023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78526507021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19016223 + ... + 19020351.

It is an arithmetic number, because the mean of its divisors is an integer number (1906821000).

Almost surely, 2^78526507023 is an apocalyptic number.

78526507023 is a deficient number, since it is larger than the sum of its proper divisors (43510036977).

78526507023 is a wasteful number, since it uses less digits than its factorization.

78526507023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4501 (or 4495 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The spelling of 78526507023 in words is "seventy-eight billion, five hundred twenty-six million, five hundred seven thousand, twenty-three".