64603504505501 has 12 divisors (see below), whose sum is σ = 70094350293408. Its totient is φ = 59515447412304.

The previous prime is 64603504505497. The next prime is 64603504505503. The reversal of 64603504505501 is 10550540530646.

It is not a de Polignac number, because 64603504505501 - 2² = 64603504505497 is a prime.

It is a super-2 number, since 2×64603504505501² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64603504505503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 379904315 + ... + 380074328.

It is an arithmetic number, because the mean of its divisors is an integer number (5841195857784).

Almost surely, 2^{64603504505501} is an apocalyptic number.

It is an amenable number.

64603504505501 is a deficient number, since it is larger than the sum of its proper divisors (5490845787907).

64603504505501 is a wasteful number, since it uses less digits than its factorization.

64603504505501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759979172 (or 759979159 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 64603504505501 in words is "sixty-four trillion, six hundred three billion, five hundred four million, five hundred five thousand, five hundred one".