77761360108642 has 16 divisors (see below), whose sum is σ = 133312715021952. Its totient is φ = 33324415623360.

The previous prime is 77761360108637. The next prime is 77761360108669. The reversal of 77761360108642 is 24680106316777.

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, 156540334 + ... + 157036297.

It is an arithmetic number, because the mean of its divisors is an integer number (8332044688872).

Almost surely, 2^{77761360108642} is an apocalyptic number.

77761360108642 is a deficient number, since it is larger than the sum of its proper divisors (55551354913310).

77761360108642 is a wasteful number, since it uses less digits than its factorization.

77761360108642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313594353.

The product of its (nonzero) digits is 14224896, while the sum is 58.

The spelling of 77761360108642 in words is "seventy-seven trillion, seven hundred sixty-one billion, three hundred sixty million, one hundred eight thousand, six hundred forty-two".