64724706490 has 16 divisors (see below), whose sum is σ = 116604668448. Its totient is φ = 25867616656.

The previous prime is 64724706463. The next prime is 64724706511. The reversal of 64724706490 is 9460742746.

64724706490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2771032 + ... + 2794291.

It is an arithmetic number, because the mean of its divisors is an integer number (7287791778).

Almost surely, 2^64724706490 is an apocalyptic number.

64724706490 is a deficient number, since it is larger than the sum of its proper divisors (51879961958).

64724706490 is a wasteful number, since it uses less digits than its factorization.

64724706490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5566493.

The product of its (nonzero) digits is 2032128, while the sum is 49.

The spelling of 64724706490 in words is "sixty-four billion, seven hundred twenty-four million, seven hundred six thousand, four hundred ninety".