72616303251 has 20 divisors (see below), whose sum is σ = 109594529352. Its totient is φ = 47911782528.

The previous prime is 72616303241. The next prime is 72616303273. The reversal of 72616303251 is 15230361627.

72616303251 is a `hidden beast` number, since 7 + 2 + 616 + 3 + 0 + 32 + 5 + 1 = 666.

It is not a de Polignac number, because 72616303251 - 2⁵ = 72616303219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72616303211) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4613265 + ... + 4628978.

Almost surely, 2^72616303251 is an apocalyptic number.

72616303251 is a deficient number, since it is larger than the sum of its proper divisors (36978226101).

72616303251 is an equidigital number, since it uses as much as digits as its factorization.

72616303251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9242352 (or 9242343 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

Adding to 72616303251 its reverse (15230361627), we get a palindrome (87846664878).

The spelling of 72616303251 in words is "seventy-two billion, six hundred sixteen million, three hundred three thousand, two hundred fifty-one".