97851809431553 has 8 divisors (see below), whose sum is σ = 101461271525376. Its totient is φ = 94270656844800.

The previous prime is 97851809431549. The next prime is 97851809431601. The reversal of 97851809431553 is 35513490815879.

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 97851809431553 - 2² = 97851809431549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97851809731553) 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, 7077369728 + ... + 7077383553.

It is an arithmetic number, because the mean of its divisors is an integer number (12682658940672).

Almost surely, 2^{97851809431553} is an apocalyptic number.

It is an amenable number.

97851809431553 is a deficient number, since it is larger than the sum of its proper divisors (3609462093823).

97851809431553 is a wasteful number, since it uses less digits than its factorization.

97851809431553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14154753535.

The product of its (nonzero) digits is 163296000, while the sum is 68.

The spelling of 97851809431553 in words is "ninety-seven trillion, eight hundred fifty-one billion, eight hundred nine million, four hundred thirty-one thousand, five hundred fifty-three".