81710702198955 has 32 divisors (see below), whose sum is σ = 146701722784320. Its totient is φ = 43147565510400.

The previous prime is 81710702198933. The next prime is 81710702198971. The reversal of 81710702198955 is 55989120701718.

It is not a de Polignac number, because 81710702198955 - 2³⁶ = 81641982722219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81710702198892 and 81710702198901.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2996345082 + ... + 2996372351.

It is an arithmetic number, because the mean of its divisors is an integer number (4584428837010).

Almost surely, 2^{81710702198955} is an apocalyptic number.

81710702198955 is a deficient number, since it is larger than the sum of its proper divisors (64991020585365).

81710702198955 is a wasteful number, since it uses less digits than its factorization.

81710702198955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5992717548 (or 5992717542 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 63.

The spelling of 81710702198955 in words is "eighty-one trillion, seven hundred ten billion, seven hundred two million, one hundred ninety-eight thousand, nine hundred fifty-five".