65251416402 has 20 divisors (see below), whose sum is σ = 146211507486. Its totient is φ = 21750472080.

The previous prime is 65251416383. The next prime is 65251416413. The reversal of 65251416402 is 20461415256.

65251416402 is a `hidden beast` number, since 6 + 5 + 2 + 5 + 1 + 4 + 1 + 640 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 64546991721 + 704424681 = 254061^2 + 26541^2 .

It is a super-3 number, since 3×65251416402³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 201393099 + ... + 201393422.

Almost surely, 2^65251416402 is an apocalyptic number.

65251416402 is an abundant number, since it is smaller than the sum of its proper divisors (80960091084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65251416402 is a wasteful number, since it uses less digits than its factorization.

65251416402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402786535 (or 402786526 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 65251416402 in words is "sixty-five billion, two hundred fifty-one million, four hundred sixteen thousand, four hundred two".