65790994500 has 1440 divisors, whose sum is σ = 288170378496. Its totient is φ = 12690432000.

The previous prime is 65790994487. The next prime is 65790994501. The reversal of 65790994500 is 549909756.

65790994500 is a `hidden beast` number, since 65 + 79 + 0 + 9 + 9 + 4 + 500 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (65790994501) 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 479 ways as a sum of consecutive naturals, for example, 901246464 + ... + 901246536.

Almost surely, 2^65790994500 is an apocalyptic number.

65790994500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65790994500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144085189248).

65790994500 is an abundant number, since it is smaller than the sum of its proper divisors (222379383996).

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

65790994500 is a wasteful number, since it uses less digits than its factorization.

65790994500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 3061800, while the sum is 54.

The spelling of 65790994500 in words is "sixty-five billion, seven hundred ninety million, nine hundred ninety-four thousand, five hundred".