72691426954 has 8 divisors (see below), whose sum is σ = 109088170308. Its totient is φ = 36328703520.

The previous prime is 72691426933. The next prime is 72691426961. The reversal of 72691426954 is 45962419627.

It can be written as a sum of positive squares in 2 ways, for example, as 56043460225 + 16647966729 = 236735^2 + 129027^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 72691426895 and 72691426904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8499637 + ... + 8508184.

Almost surely, 2^72691426954 is an apocalyptic number.

72691426954 is a deficient number, since it is larger than the sum of its proper divisors (36396743354).

72691426954 is a wasteful number, since it uses less digits than its factorization.

72691426954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17009960.

The product of its digits is 6531840, while the sum is 55.

The spelling of 72691426954 in words is "seventy-two billion, six hundred ninety-one million, four hundred twenty-six thousand, nine hundred fifty-four".