61651776134 has 16 divisors (see below), whose sum is σ = 99707575968. Its totient is φ = 28421452992.

The previous prime is 61651776133. The next prime is 61651776149. The reversal of 61651776134 is 43167715616.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61651776133) 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, 1361162 + ... + 1405725.

It is an arithmetic number, because the mean of its divisors is an integer number (6231723498).

Almost surely, 2^61651776134 is an apocalyptic number.

61651776134 is a deficient number, since it is larger than the sum of its proper divisors (38055799834).

61651776134 is a wasteful number, since it uses less digits than its factorization.

61651776134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2767759.

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

The spelling of 61651776134 in words is "sixty-one billion, six hundred fifty-one million, seven hundred seventy-six thousand, one hundred thirty-four".