77242412007155 has 8 divisors (see below), whose sum is σ = 94439779209072. Its totient is φ = 60628006405408.

The previous prime is 77242412007139. The next prime is 77242412007157. The reversal of 77242412007155 is 55170021424277.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77242412007155 - 2⁴ = 77242412007139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77242412007157) 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, 145740399749 + ... + 145740400278.

It is an arithmetic number, because the mean of its divisors is an integer number (11804972401134).

Almost surely, 2^{77242412007155} is an apocalyptic number.

77242412007155 is a deficient number, since it is larger than the sum of its proper divisors (17197367201917).

77242412007155 is a wasteful number, since it uses less digits than its factorization.

77242412007155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291480800085.

The product of its (nonzero) digits is 1097600, while the sum is 47.

The spelling of 77242412007155 in words is "seventy-seven trillion, two hundred forty-two billion, four hundred twelve million, seven thousand, one hundred fifty-five".