65377421252 has 96 divisors (see below), whose sum is σ = 141804432000. Its totient is φ = 25928985600.

The previous prime is 65377421251. The next prime is 65377421257. The reversal of 65377421252 is 25212477356.

65377421252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×65377421252² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (65377421251) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5003624 + ... + 5016672.

It is an arithmetic number, because the mean of its divisors is an integer number (1477129500).

Almost surely, 2^65377421252 is an apocalyptic number.

It is an amenable number.

65377421252 is an abundant number, since it is smaller than the sum of its proper divisors (76427010748).

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

65377421252 is a wasteful number, since it uses less digits than its factorization.

65377421252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13557 (or 13555 counting only the distinct ones).

The product of its digits is 705600, while the sum is 44.

The spelling of 65377421252 in words is "sixty-five billion, three hundred seventy-seven million, four hundred twenty-one thousand, two hundred fifty-two".