72494252626 has 4 divisors (see below), whose sum is σ = 108741378942. Its totient is φ = 36247126312.

The previous prime is 72494252591. The next prime is 72494252669. The reversal of 72494252626 is 62625249427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62625249427 = 13 ⋅4817326879.

It can be written as a sum of positive squares in only one way, i.e., 60540110401 + 11954142225 = 246049^2 + 109335^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72494252626.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18123563155 + ... + 18123563158.

Almost surely, 2^72494252626 is an apocalyptic number.

72494252626 is a deficient number, since it is larger than the sum of its proper divisors (36247126316).

72494252626 is a wasteful number, since it uses less digits than its factorization.

72494252626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36247126315.

The product of its digits is 2903040, while the sum is 49.

The spelling of 72494252626 in words is "seventy-two billion, four hundred ninety-four million, two hundred fifty-two thousand, six hundred twenty-six".