97643974526 has 48 divisors (see below), whose sum is σ = 182730148560. Its totient is φ = 38896865280.

The previous prime is 97643974523. The next prime is 97643974529. The reversal of 97643974526 is 62547934679.

It is an interprime number because it is at equal distance from previous prime (97643974523) and next prime (97643974529).

It is a super-2 number, since 2×97643974526² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (62) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97643974523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 396035 + ... + 593406.

It is an arithmetic number, because the mean of its divisors is an integer number (3806878095).

Almost surely, 2^97643974526 is an apocalyptic number.

97643974526 is a deficient number, since it is larger than the sum of its proper divisors (85086174034).

97643974526 is a wasteful number, since it uses less digits than its factorization.

97643974526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989529 (or 989522 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 62.

The spelling of 97643974526 in words is "ninety-seven billion, six hundred forty-three million, nine hundred seventy-four thousand, five hundred twenty-six".