65612764500 has 48 divisors (see below), whose sum is σ = 191064374592. Its totient is φ = 17496736800.

The previous prime is 65612764439. The next prime is 65612764501. The reversal of 65612764500 is 546721656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65612764501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21869422 + ... + 21872421.

It is an arithmetic number, because the mean of its divisors is an integer number (3980507804).

Almost surely, 2^65612764500 is an apocalyptic number.

65612764500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65612764500 is an abundant number, since it is smaller than the sum of its proper divisors (125451610092).

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

65612764500 is a wasteful number, since it uses less digits than its factorization.

65612764500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43741865 (or 43741853 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 42.

The spelling of 65612764500 in words is "sixty-five billion, six hundred twelve million, seven hundred sixty-four thousand, five hundred".