65237428557 has 18 divisors (see below), whose sum is σ = 109616632398. Its totient is φ = 37278530352.

The previous prime is 65237428507. The next prime is 65237428573. The reversal of 65237428557 is 75582473256.

65237428557 is a `hidden beast` number, since 6 + 52 + 37 + 4 + 2 + 8 + 557 = 666.

It can be written as a sum of positive squares in only one way, i.e., 64791120681 + 446307876 = 254541^2 + 21126^2 .

It is not a de Polignac number, because 65237428557 - 2¹⁶ = 65237363021 is a prime.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65237428507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 73964898 + ... + 73965779.

It is an arithmetic number, because the mean of its divisors is an integer number (6089812911).

Almost surely, 2^65237428557 is an apocalyptic number.

It is an amenable number.

65237428557 is a deficient number, since it is larger than the sum of its proper divisors (44379203841).

65237428557 is a wasteful number, since it uses less digits than its factorization.

65237428557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147930697 (or 147930687 counting only the distinct ones).

The product of its digits is 14112000, while the sum is 54.

The spelling of 65237428557 in words is "sixty-five billion, two hundred thirty-seven million, four hundred twenty-eight thousand, five hundred fifty-seven".