121749676278 has 16 divisors (see below), whose sum is σ = 254086281216. Its totient is φ = 38818737320.

The previous prime is 121749676277. The next prime is 121749676289. The reversal of 121749676278 is 872676947121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121749676277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441121878 + ... + 441122153.

It is an arithmetic number, because the mean of its divisors is an integer number (15880392576).

Almost surely, 2^121749676278 is an apocalyptic number.

121749676278 is an abundant number, since it is smaller than the sum of its proper divisors (132336604938).

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

121749676278 is a wasteful number, since it uses less digits than its factorization.

121749676278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882244059.

The product of its digits is 14224896, while the sum is 60.

The spelling of 121749676278 in words is "one hundred twenty-one billion, seven hundred forty-nine million, six hundred seventy-six thousand, two hundred seventy-eight".