122971544738 has 24 divisors (see below), whose sum is σ = 219562870032. Its totient is φ = 51476458824.

The previous prime is 122971544737. The next prime is 122971544803. The reversal of 122971544738 is 837445179221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 122971544738.

It is not an unprimeable number, because it can be changed into a prime (122971544737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14586620 + ... + 14595047.

It is an arithmetic number, because the mean of its divisors is an integer number (9148452918).

Almost surely, 2^122971544738 is an apocalyptic number.

122971544738 is a deficient number, since it is larger than the sum of its proper divisors (96591325294).

122971544738 is a wasteful number, since it uses less digits than its factorization.

122971544738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29181726 (or 29181719 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 53.

The spelling of 122971544738 in words is "one hundred twenty-two billion, nine hundred seventy-one million, five hundred forty-four thousand, seven hundred thirty-eight".