67521869023 has 32 divisors (see below), whose sum is σ = 81357696000. Its totient is φ = 55972721952.

The previous prime is 67521868993. The next prime is 67521869029. The reversal of 67521869023 is 32096812576.

It is not a de Polignac number, because 67521869023 - 2²⁵ = 67488314591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67521869029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2103468 + ... + 2135326.

It is an arithmetic number, because the mean of its divisors is an integer number (2542428000).

Almost surely, 2^67521869023 is an apocalyptic number.

67521869023 is a deficient number, since it is larger than the sum of its proper divisors (13835826977).

67521869023 is a wasteful number, since it uses less digits than its factorization.

67521869023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32084 (or 32070 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 67521869023 in words is "sixty-seven billion, five hundred twenty-one million, eight hundred sixty-nine thousand, twenty-three".