73720544416 has 12 divisors (see below), whose sum is σ = 145137321882. Its totient is φ = 36860272192.

The previous prime is 73720544413. The next prime is 73720544437. The reversal of 73720544416 is 61444502737.

It can be written as a sum of positive squares in only one way, i.e., 65738908816 + 7981635600 = 256396^2 + 89340^2 .

It is not an unprimeable number, because it can be changed into a prime (73720544413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1151883475 + ... + 1151883538.

Almost surely, 2^73720544416 is an apocalyptic number.

It is an amenable number.

73720544416 is a deficient number, since it is larger than the sum of its proper divisors (71416777466).

73720544416 is a wasteful number, since it uses less digits than its factorization.

73720544416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2303767023 (or 2303767015 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 43.

The spelling of 73720544416 in words is "seventy-three billion, seven hundred twenty million, five hundred forty-four thousand, four hundred sixteen".