72661090377 has 8 divisors (see below), whose sum is σ = 97786888416. Its totient is φ = 47988009632.

The previous prime is 72661090373. The next prime is 72661090417. The reversal of 72661090377 is 77309016627.

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 72661090377 - 2² = 72661090373 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72661090373) 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, 113178948 + ... + 113179589.

It is an arithmetic number, because the mean of its divisors is an integer number (12223361052).

Almost surely, 2^72661090377 is an apocalyptic number.

It is an amenable number.

72661090377 is a deficient number, since it is larger than the sum of its proper divisors (25125798039).

72661090377 is a wasteful number, since it uses less digits than its factorization.

72661090377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226358647.

The product of its (nonzero) digits is 666792, while the sum is 48.

The spelling of 72661090377 in words is "seventy-two billion, six hundred sixty-one million, ninety thousand, three hundred seventy-seven".