52077901491 has 24 divisors (see below), whose sum is σ = 93785313024. Its totient is φ = 27053454960.

The previous prime is 52077901471. The next prime is 52077901537. The reversal of 52077901491 is 19410977025.

52077901491 is a `hidden beast` number, since 5 + 2 + 0 + 77 + 90 + 1 + 491 = 666.

It is not a de Polignac number, because 52077901491 - 2⁶ = 52077901427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52077901411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37573551 + ... + 37574936.

It is an arithmetic number, because the mean of its divisors is an integer number (3907721376).

Almost surely, 2^52077901491 is an apocalyptic number.

52077901491 is a deficient number, since it is larger than the sum of its proper divisors (41707411533).

52077901491 is a wasteful number, since it uses less digits than its factorization.

52077901491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75148511 (or 75148508 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The spelling of 52077901491 in words is "fifty-two billion, seventy-seven million, nine hundred one thousand, four hundred ninety-one".