61774610377 has 16 divisors (see below), whose sum is σ = 67149022720. Its totient is φ = 56613945600.

The previous prime is 61774610267. The next prime is 61774610389. The reversal of 61774610377 is 77301647716.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61774610377 is a prime.

It is a super-2 number, since 2×61774610377² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61774610377.

It is not an unprimeable number, because it can be changed into a prime (61774610477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1650127 + ... + 1687147.

It is an arithmetic number, because the mean of its divisors is an integer number (4196813920).

Almost surely, 2^61774610377 is an apocalyptic number.

It is an amenable number.

61774610377 is a deficient number, since it is larger than the sum of its proper divisors (5374412343).

61774610377 is a wasteful number, since it uses less digits than its factorization.

61774610377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39904.

The product of its (nonzero) digits is 1037232, while the sum is 49.

The spelling of 61774610377 in words is "sixty-one billion, seven hundred seventy-four million, six hundred ten thousand, three hundred seventy-seven".