197244465840 has 60 divisors (see below), whose sum is σ = 662412666864. Its totient is φ = 52598524032.

The previous prime is 197244465839. The next prime is 197244465877. The reversal of 197244465840 is 48564442791.

197244465840 is a `hidden beast` number, since 1 + 97 + 24 + 446 + 58 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136974604 + ... + 136976043.

Almost surely, 2^197244465840 is an apocalyptic number.

197244465840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197244465840 is an abundant number, since it is smaller than the sum of its proper divisors (465168201024).

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

197244465840 is a wasteful number, since it uses less digits than its factorization.

197244465840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273950666 (or 273950657 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 197244465840 in words is "one hundred ninety-seven billion, two hundred forty-four million, four hundred sixty-five thousand, eight hundred forty".