64202761920 has 224 divisors, whose sum is σ = 222628455936. Its totient is φ = 15546572800.

The previous prime is 64202761907. The next prime is 64202762017. The reversal of 64202761920 is 2916720246.

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 31 ways as a sum of consecutive naturals, for example, 10884412 + ... + 10890308.

Almost surely, 2^64202761920 is an apocalyptic number.

64202761920 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 64202761920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111314227968).

64202761920 is an abundant number, since it is smaller than the sum of its proper divisors (158425694016).

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

64202761920 is a wasteful number, since it uses less digits than its factorization.

64202761920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6959 (or 6949 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The spelling of 64202761920 in words is "sixty-four billion, two hundred two million, seven hundred sixty-one thousand, nine hundred twenty".