77976670043 has 4 divisors (see below), whose sum is σ = 80492046528. Its totient is φ = 75461293560.

The previous prime is 77976670027. The next prime is 77976670049. The reversal of 77976670043 is 34007667977.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 77976670043 - 2⁴ = 77976670027 is a prime.

It is a super-2 number, since 2×77976670043² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77976670049) 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, 1257688196 + ... + 1257688257.

It is an arithmetic number, because the mean of its divisors is an integer number (20123011632).

Almost surely, 2^77976670043 is an apocalyptic number.

77976670043 is a deficient number, since it is larger than the sum of its proper divisors (2515376485).

77976670043 is a wasteful number, since it uses less digits than its factorization.

77976670043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2515376484.

The product of its (nonzero) digits is 9335088, while the sum is 56.

The spelling of 77976670043 in words is "seventy-seven billion, nine hundred seventy-six million, six hundred seventy thousand, forty-three".