73903606644 has 48 divisors (see below), whose sum is σ = 199108020608. Its totient is φ = 20897630208.

The previous prime is 73903606619. The next prime is 73903606649. The reversal of 73903606644 is 44660630937.

It is a junction number, because it is equal to n+sod(n) for n = 73903606593 and 73903606602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73903606649) 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, 4526929 + ... + 4543224.

Almost surely, 2^73903606644 is an apocalyptic number.

It is an amenable number.

73903606644 is an abundant number, since it is smaller than the sum of its proper divisors (125204413964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73903606644 is a wasteful number, since it uses less digits than its factorization.

73903606644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9070264 (or 9070262 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 48.

The spelling of 73903606644 in words is "seventy-three billion, nine hundred three million, six hundred six thousand, six hundred forty-four".