72963778420 has 48 divisors (see below), whose sum is σ = 165541154688. Its totient is φ = 26853816960.

The previous prime is 72963778403. The next prime is 72963778429. The reversal of 72963778420 is 2487736927.

It is a super-2 number, since 2×72963778420² (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 (72963778429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370314 + ... + 532033.

It is an arithmetic number, because the mean of its divisors is an integer number (3448774056).

Almost surely, 2^72963778420 is an apocalyptic number.

It is an amenable number.

72963778420 is an abundant number, since it is smaller than the sum of its proper divisors (92577376268).

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

72963778420 is a wasteful number, since it uses less digits than its factorization.

72963778420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902680 (or 902678 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 55.

The spelling of 72963778420 in words is "seventy-two billion, nine hundred sixty-three million, seven hundred seventy-eight thousand, four hundred twenty".