64621402036 has 24 divisors (see below), whose sum is σ = 116754584576. Its totient is φ = 31263291360.

The previous prime is 64621402033. The next prime is 64621402051. The reversal of 64621402036 is 63020412646.

It is a super-3 number, since 3×64621402036³ (a number of 33 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64621401992 and 64621402010.

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 7 ways as a sum of consecutive naturals, for example, 779830 + ... + 858706.

Almost surely, 2^64621402036 is an apocalyptic number.

It is an amenable number.

64621402036 is a deficient number, since it is larger than the sum of its proper divisors (52133182540).

64621402036 is a wasteful number, since it uses less digits than its factorization.

64621402036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85519 (or 85517 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 64621402036 in words is "sixty-four billion, six hundred twenty-one million, four hundred two thousand, thirty-six".