77922125542 has 8 divisors (see below), whose sum is σ = 116890101576. Its totient is φ = 38958758352.

The previous prime is 77922125513. The next prime is 77922125549. The reversal of 77922125542 is 24552122977.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 77922125492 and 77922125501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77922125549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1109628 + ... + 1177759.

It is an arithmetic number, because the mean of its divisors is an integer number (14611262697).

Almost surely, 2^77922125542 is an apocalyptic number.

77922125542 is a deficient number, since it is larger than the sum of its proper divisors (38967976034).

77922125542 is a wasteful number, since it uses less digits than its factorization.

77922125542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2304422.

The product of its digits is 705600, while the sum is 46.

The spelling of 77922125542 in words is "seventy-seven billion, nine hundred twenty-two million, one hundred twenty-five thousand, five hundred forty-two".