97440547229378 has 4 divisors (see below), whose sum is σ = 146160820844070. Its totient is φ = 48720273614688.

The previous prime is 97440547229371. The next prime is 97440547229381. The reversal of 97440547229378 is 87392274504479.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 92818060129369 + 4622487100009 = 9634213^2 + 2149997^2 .

It is not an unprimeable number, because it can be changed into a prime (97440547229371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24360136807343 + ... + 24360136807346.

Almost surely, 2^{97440547229378} is an apocalyptic number.

97440547229378 is a deficient number, since it is larger than the sum of its proper divisors (48720273614692).

97440547229378 is a wasteful number, since it uses less digits than its factorization.

97440547229378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48720273614691.

The product of its (nonzero) digits is 853493760, while the sum is 71.

The spelling of 97440547229378 in words is "ninety-seven trillion, four hundred forty billion, five hundred forty-seven million, two hundred twenty-nine thousand, three hundred seventy-eight".