77121767060122 has 16 divisors (see below), whose sum is σ = 118812484663272. Its totient is φ = 37517662978560.

The previous prime is 77121767060111. The next prime is 77121767060131. The reversal of 77121767060122 is 22106076712177.

It can be written as a sum of positive squares in 4 ways, for example, as 68307762052201 + 8814005007921 = 8264851^2 + 2968839^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11662879 + ... + 17037202.

Almost surely, 2^{77121767060122} is an apocalyptic number.

77121767060122 is a deficient number, since it is larger than the sum of its proper divisors (41690717603150).

77121767060122 is a wasteful number, since it uses less digits than its factorization.

77121767060122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28736433.

The product of its (nonzero) digits is 691488, while the sum is 49.

The spelling of 77121767060122 in words is "seventy-seven trillion, one hundred twenty-one billion, seven hundred sixty-seven million, sixty thousand, one hundred twenty-two".