64506036461 has 8 divisors (see below), whose sum is σ = 68305187520. Its totient is φ = 60707405248.

The previous prime is 64506036457. The next prime is 64506036493. The reversal of 64506036461 is 16463060546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64506036461 - 2² = 64506036457 is a prime.

It is a super-2 number, since 2×64506036461² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64506536461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141770 + ... + 386148.

It is an arithmetic number, because the mean of its divisors is an integer number (8538148440).

Almost surely, 2^64506036461 is an apocalyptic number.

It is an amenable number.

64506036461 is a deficient number, since it is larger than the sum of its proper divisors (3799151059).

64506036461 is a wasteful number, since it uses less digits than its factorization.

64506036461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259923.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 64506036461 in words is "sixty-four billion, five hundred six million, thirty-six thousand, four hundred sixty-one".