97477902722 has 18 divisors (see below), whose sum is σ = 146930973147. Its totient is φ = 48502066224.

The previous prime is 97477902679. The next prime is 97477902779. The reversal of 97477902722 is 22720977479.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 15705353041 + 81772549681 = 125321^2 + 285959^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=220769.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 122305628 + ... + 122306424.

Almost surely, 2^97477902722 is an apocalyptic number.

97477902722 is a deficient number, since it is larger than the sum of its proper divisors (49453070425).

97477902722 is an frugal number, since it uses more digits than its factorization.

97477902722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2150 (or 1076 counting only the distinct ones).

The product of its (nonzero) digits is 6223392, while the sum is 56.

The spelling of 97477902722 in words is "ninety-seven billion, four hundred seventy-seven million, nine hundred two thousand, seven hundred twenty-two".