97153384881 has 32 divisors (see below), whose sum is σ = 157436317440. Its totient is φ = 52022347776.

The previous prime is 97153384877. The next prime is 97153384903. The reversal of 97153384881 is 18848335179.

It is a happy number.

It is not a de Polignac number, because 97153384881 - 2² = 97153384877 is a prime.

It is a super-2 number, since 2×97153384881² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (97153384831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 512436 + ... + 675941.

It is an arithmetic number, because the mean of its divisors is an integer number (4919884920).

Almost surely, 2^97153384881 is an apocalyptic number.

It is an amenable number.

97153384881 is a deficient number, since it is larger than the sum of its proper divisors (60282932559).

97153384881 is a wasteful number, since it uses less digits than its factorization.

97153384881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188633.

The product of its digits is 5806080, while the sum is 57.

The spelling of 97153384881 in words is "ninety-seven billion, one hundred fifty-three million, three hundred eighty-four thousand, eight hundred eighty-one".