64364197401 has 45 divisors (see below), whose sum is σ = 111874561029. Its totient is φ = 36770408136.

The previous prime is 64364197399. The next prime is 64364197453. The reversal of 64364197401 is 10479146346.

The square root of 64364197401 is 253701.

It is a perfect power (a square), and thus also a powerful number.

64364197401 is a `hidden beast` number, since 64 + 364 + 197 + 40 + 1 = 666.

It is not a de Polignac number, because 64364197401 - 2¹ = 64364197399 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64364198401) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 15981150 + ... + 15985176.

Almost surely, 2^64364197401 is an apocalyptic number.

64364197401 is the 253701-st square number.

64364197401 is the 126851-st centered octagonal number.

It is an amenable number.

64364197401 is a deficient number, since it is larger than the sum of its proper divisors (47510363628).

64364197401 is an frugal number, since it uses more digits than its factorization.

64364197401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8080 (or 4037 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 64364197401 in words is "sixty-four billion, three hundred sixty-four million, one hundred ninety-seven thousand, four hundred one".