64040220245634 has 16 divisors (see below), whose sum is σ = 132497007405120. Its totient is φ = 20610645596240.

The previous prime is 64040220245539. The next prime is 64040220245671. The reversal of 64040220245634 is 43654202204046.

It is a super-2 number, since 2×64040220245634² (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 7 ways as a sum of consecutive naturals, for example, 184023621222 + ... + 184023621569.

It is an arithmetic number, because the mean of its divisors is an integer number (8281062962820).

Almost surely, 2^{64040220245634} is an apocalyptic number.

64040220245634 is an abundant number, since it is smaller than the sum of its proper divisors (68456787159486).

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

64040220245634 is a wasteful number, since it uses less digits than its factorization.

64040220245634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368047242825.

The product of its (nonzero) digits is 1105920, while the sum is 42.

The spelling of 64040220245634 in words is "sixty-four trillion, forty billion, two hundred twenty million, two hundred forty-five thousand, six hundred thirty-four".