73561957628 has 12 divisors (see below), whose sum is σ = 128746674672. Its totient is φ = 36777193440.

The previous prime is 73561957621. The next prime is 73561957669. The reversal of 73561957628 is 82675916537.

It is a happy number.

It is a super-2 number, since 2×73561957628² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73561957621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902393 + ... + 980528.

It is an arithmetic number, because the mean of its divisors is an integer number (10728889556).

Almost surely, 2^73561957628 is an apocalyptic number.

It is an amenable number.

73561957628 is a deficient number, since it is larger than the sum of its proper divisors (55184717044).

73561957628 is a wasteful number, since it uses less digits than its factorization.

73561957628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892692 (or 1892690 counting only the distinct ones).

The product of its digits is 19051200, while the sum is 59.

The spelling of 73561957628 in words is "seventy-three billion, five hundred sixty-one million, nine hundred fifty-seven thousand, six hundred twenty-eight".