77900651462 has 4 divisors (see below), whose sum is σ = 116850977196. Its totient is φ = 38950325730.

The previous prime is 77900651447. The next prime is 77900651467. The reversal of 77900651462 is 26415600977.

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

It is a super-2 number, since 2×77900651462² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77900651467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19475162864 + ... + 19475162867.

It is an arithmetic number, because the mean of its divisors is an integer number (29212744299).

Almost surely, 2^77900651462 is an apocalyptic number.

77900651462 is a deficient number, since it is larger than the sum of its proper divisors (38950325734).

77900651462 is a wasteful number, since it uses less digits than its factorization.

77900651462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38950325733.

The product of its (nonzero) digits is 635040, while the sum is 47.

The spelling of 77900651462 in words is "seventy-seven billion, nine hundred million, six hundred fifty-one thousand, four hundred sixty-two".