97776712655 has 32 divisors (see below), whose sum is σ = 123489722880. Its totient is φ = 74217162240.

The previous prime is 97776712651. The next prime is 97776712667. The reversal of 97776712655 is 55621767779.

It is a happy number.

It is not a de Polignac number, because 97776712655 - 2² = 97776712651 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97776712651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14693309 + ... + 14699961.

It is an arithmetic number, because the mean of its divisors is an integer number (3859053840).

Almost surely, 2^97776712655 is an apocalyptic number.

97776712655 is a deficient number, since it is larger than the sum of its proper divisors (25713010225).

97776712655 is a wasteful number, since it uses less digits than its factorization.

97776712655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8531.

The product of its digits is 38896200, while the sum is 62.

The spelling of 97776712655 in words is "ninety-seven billion, seven hundred seventy-six million, seven hundred twelve thousand, six hundred fifty-five".