64621402037 has 16 divisors (see below), whose sum is σ = 70400064000. Its totient is φ = 59111285760.

The previous prime is 64621402033. The next prime is 64621402051. The reversal of 64621402037 is 73020412646.

It is a cyclic number.

It is not a de Polignac number, because 64621402037 - 2² = 64621402033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64621401988 and 64621402006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64621402033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 352037 + ... + 503162.

It is an arithmetic number, because the mean of its divisors is an integer number (4400004000).

Almost surely, 2^64621402037 is an apocalyptic number.

It is an amenable number.

64621402037 is a deficient number, since it is larger than the sum of its proper divisors (5778661963).

64621402037 is a wasteful number, since it uses less digits than its factorization.

64621402037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855356.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 64621402037 in words is "sixty-four billion, six hundred twenty-one million, four hundred two thousand, thirty-seven".