65172748971 has 64 divisors (see below), whose sum is σ = 98800238592. Its totient is φ = 37857120000.

The previous prime is 65172748961. The next prime is 65172748997. The reversal of 65172748971 is 17984727156.

It is not a de Polignac number, because 65172748971 - 2¹³ = 65172740779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (65172748961) 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, 54904840 + ... + 54906026.

It is an arithmetic number, because the mean of its divisors is an integer number (1543753728).

Almost surely, 2^65172748971 is an apocalyptic number.

65172748971 is a deficient number, since it is larger than the sum of its proper divisors (33627489621).

65172748971 is a wasteful number, since it uses less digits than its factorization.

65172748971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704.

The product of its digits is 5927040, while the sum is 57.

The spelling of 65172748971 in words is "sixty-five billion, one hundred seventy-two million, seven hundred forty-eight thousand, nine hundred seventy-one".