72664377321602 has 16 divisors (see below), whose sum is σ = 118949995703232. Its totient is φ = 33016859364720.

The previous prime is 72664377321593. The next prime is 72664377321637. The reversal of 72664377321602 is 20612377346627.

It is a happy number.

It is a super-2 number, since 2×72664377321602² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 620092793 + ... + 620209964.

It is an arithmetic number, because the mean of its divisors is an integer number (7434374731452).

Almost surely, 2^{72664377321602} is an apocalyptic number.

72664377321602 is a deficient number, since it is larger than the sum of its proper divisors (46285618381630).

72664377321602 is a wasteful number, since it uses less digits than its factorization.

72664377321602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240305433.

The product of its (nonzero) digits is 21337344, while the sum is 56.

The spelling of 72664377321602 in words is "seventy-two trillion, six hundred sixty-four billion, three hundred seventy-seven million, three hundred twenty-one thousand, six hundred two".