77142412892 has 12 divisors (see below), whose sum is σ = 139354036416. Its totient is φ = 37326973920.

The previous prime is 77142412891. The next prime is 77142412903. The reversal of 77142412892 is 29821424177.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77142412891) 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, 311057993 + ... + 311058240.

It is an arithmetic number, because the mean of its divisors is an integer number (11612836368).

Almost surely, 2^77142412892 is an apocalyptic number.

It is an amenable number.

77142412892 is a deficient number, since it is larger than the sum of its proper divisors (62211623524).

77142412892 is a wasteful number, since it uses less digits than its factorization.

77142412892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622116268 (or 622116266 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The spelling of 77142412892 in words is "seventy-seven billion, one hundred forty-two million, four hundred twelve thousand, eight hundred ninety-two".