72621530761 has 8 divisors (see below), whose sum is σ = 78389265024. Its totient is φ = 66879719760.

The previous prime is 72621530753. The next prime is 72621530771. The reversal of 72621530761 is 16703512627.

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 72621530761 - 2³ = 72621530753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72621530771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6474991 + ... + 6486196.

It is an arithmetic number, because the mean of its divisors is an integer number (9798658128).

Almost surely, 2^72621530761 is an apocalyptic number.

It is an amenable number.

72621530761 is a deficient number, since it is larger than the sum of its proper divisors (5767734263).

72621530761 is a wasteful number, since it uses less digits than its factorization.

72621530761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12961631.

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 72621530761 in words is "seventy-two billion, six hundred twenty-one million, five hundred thirty thousand, seven hundred sixty-one".