97798423744 has 56 divisors (see below), whose sum is σ = 221990452640. Its totient is φ = 41876269056.

The previous prime is 97798423733. The next prime is 97798423747. The reversal of 97798423744 is 44732489779.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (64).

It is not an unprimeable number, because it can be changed into a prime (97798423747) 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, 409114 + ... + 602470.

Almost surely, 2^97798423744 is an apocalyptic number.

It is an amenable number.

97798423744 is an abundant number, since it is smaller than the sum of its proper divisors (124192028896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97798423744 is a wasteful number, since it uses less digits than its factorization.

97798423744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194505 (or 194495 counting only the distinct ones).

The product of its digits is 85349376, while the sum is 64.

The spelling of 97798423744 in words is "ninety-seven billion, seven hundred ninety-eight million, four hundred twenty-three thousand, seven hundred forty-four".