73961220912 has 40 divisors (see below), whose sum is σ = 197654990640. Its totient is φ = 23803610880.

The previous prime is 73961220863. The next prime is 73961220919. The reversal of 73961220912 is 21902216937.

It is a super-2 number, since 2×73961220912² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (73961220919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26565139 + ... + 26567922.

It is an arithmetic number, because the mean of its divisors is an integer number (4941374766).

Almost surely, 2^73961220912 is an apocalyptic number.

It is an amenable number.

73961220912 is an abundant number, since it is smaller than the sum of its proper divisors (123693769728).

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

73961220912 is a wasteful number, since it uses less digits than its factorization.

73961220912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53133101 (or 53133095 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The spelling of 73961220912 in words is "seventy-three billion, nine hundred sixty-one million, two hundred twenty thousand, nine hundred twelve".