121761254634 has 96 divisors (see below), whose sum is σ = 260435238336. Its totient is φ = 37942629120.

The previous prime is 121761254633. The next prime is 121761254663. The reversal of 121761254634 is 436452167121.

It is not an unprimeable number, because it can be changed into a prime (121761254633) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 53709169 + ... + 53711435.

It is an arithmetic number, because the mean of its divisors is an integer number (2712867066).

Almost surely, 2^121761254634 is an apocalyptic number.

121761254634 is an abundant number, since it is smaller than the sum of its proper divisors (138673983702).

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

121761254634 is a wasteful number, since it uses less digits than its factorization.

121761254634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628 (or 2609 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The spelling of 121761254634 in words is "one hundred twenty-one billion, seven hundred sixty-one million, two hundred fifty-four thousand, six hundred thirty-four".