64617610007420 has 24 divisors (see below), whose sum is σ = 135706553239824. Its totient is φ = 25845220722176.

The previous prime is 64617610007389. The next prime is 64617610007449. The reversal of 64617610007420 is 2470001671646.

It is a congruent number.

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, 113664422 + ... + 114231501.

It is an arithmetic number, because the mean of its divisors is an integer number (5654439718326).

Almost surely, 2^{64617610007420} is an apocalyptic number.

It is an amenable number.

64617610007420 is an abundant number, since it is smaller than the sum of its proper divisors (71088943232404).

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

64617610007420 is a wasteful number, since it uses less digits than its factorization.

64617610007420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227910109 (or 227910107 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The spelling of 64617610007420 in words is "sixty-four trillion, six hundred seventeen billion, six hundred ten million, seven thousand, four hundred twenty".