72202098661 has 16 divisors (see below), whose sum is σ = 90025246080. Its totient is φ = 56256972480.

The previous prime is 72202098659. The next prime is 72202098691. The reversal of 72202098661 is 16689020227.

It is a cyclic number.

It is not a de Polignac number, because 72202098661 - 2¹ = 72202098659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72202098691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1240275 + ... + 1297183.

It is an arithmetic number, because the mean of its divisors is an integer number (5626577880).

Almost surely, 2^72202098661 is an apocalyptic number.

It is an amenable number.

72202098661 is a deficient number, since it is larger than the sum of its proper divisors (17823147419).

72202098661 is a wasteful number, since it uses less digits than its factorization.

72202098661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73404.

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 72202098661 in words is "seventy-two billion, two hundred two million, ninety-eight thousand, six hundred sixty-one".