72100506451 has 8 divisors (see below), whose sum is σ = 72903265760. Its totient is φ = 71299723392.

The previous prime is 72100506433. The next prime is 72100506473. The reversal of 72100506451 is 15460500127.

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

It is a cyclic number.

It is not a de Polignac number, because 72100506451 - 2⁵ = 72100506419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72100506431) 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, 420630 + ... + 566683.

It is an arithmetic number, because the mean of its divisors is an integer number (9112908220).

Almost surely, 2^72100506451 is an apocalyptic number.

72100506451 is a deficient number, since it is larger than the sum of its proper divisors (802759309).

72100506451 is a wasteful number, since it uses less digits than its factorization.

72100506451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 988125.

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 72100506451 in words is "seventy-two billion, one hundred million, five hundred six thousand, four hundred fifty-one".