89747270505 has 24 divisors (see below), whose sum is σ = 155569387272. Its totient is φ = 47862918144.

The previous prime is 89747270489. The next prime is 89747270513. The reversal of 89747270505 is 50507274798.

It is a happy number.

89747270505 is a `hidden beast` number, since 8 + 97 + 47 + 2 + 7 + 0 + 505 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 816873561 + 88930396944 = 28581^2 + 298212^2 .

It is not a de Polignac number, because 89747270505 - 2⁴ = 89747270489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1354407 + ... + 1419123.

It is an arithmetic number, because the mean of its divisors is an integer number (6482057803).

Almost surely, 2^89747270505 is an apocalyptic number.

It is an amenable number.

89747270505 is a deficient number, since it is larger than the sum of its proper divisors (65822116767).

89747270505 is a wasteful number, since it uses less digits than its factorization.

89747270505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95545 (or 95542 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 54.

The spelling of 89747270505 in words is "eighty-nine billion, seven hundred forty-seven million, two hundred seventy thousand, five hundred five".