64888654389740 has 48 divisors (see below), whose sum is σ = 139437212708640. Its totient is φ = 25351472240640.

The previous prime is 64888654389733. The next prime is 64888654389763. The reversal of 64888654389740 is 4798345688846.

It is a super-2 number, since 2×64888654389740² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61813166 + ... + 62854154.

It is an arithmetic number, because the mean of its divisors is an integer number (2904941931430).

Almost surely, 2^{64888654389740} is an apocalyptic number.

It is an amenable number.

64888654389740 is an abundant number, since it is smaller than the sum of its proper divisors (74548558318900).

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

64888654389740 is a wasteful number, since it uses less digits than its factorization.

64888654389740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113522 (or 1113520 counting only the distinct ones).

The product of its (nonzero) digits is 8918138880, while the sum is 80.

The spelling of 64888654389740 in words is "sixty-four trillion, eight hundred eighty-eight billion, six hundred fifty-four million, three hundred eighty-nine thousand, seven hundred forty".