121745457938 has 32 divisors (see below), whose sum is σ = 197049054720. Its totient is φ = 56080823040.

The previous prime is 121745457923. The next prime is 121745457941. The reversal of 121745457938 is 839754547121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45784853 + ... + 45787511.

It is an arithmetic number, because the mean of its divisors is an integer number (6157782960).

Almost surely, 2^121745457938 is an apocalyptic number.

121745457938 is a deficient number, since it is larger than the sum of its proper divisors (75303596782).

121745457938 is a wasteful number, since it uses less digits than its factorization.

121745457938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5442.

The product of its digits is 8467200, while the sum is 56.

The spelling of 121745457938 in words is "one hundred twenty-one billion, seven hundred forty-five million, four hundred fifty-seven thousand, nine hundred thirty-eight".