61860737961 has 16 divisors (see below), whose sum is σ = 99976950720. Its totient is φ = 37491356160.

The previous prime is 61860737941. The next prime is 61860737971. The reversal of 61860737961 is 16973706816.

It is a happy number.

It is not a de Polignac number, because 61860737961 - 2¹⁴ = 61860721577 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61860737898 and 61860737907.

It is not an unprimeable number, because it can be changed into a prime (61860737941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104142360 + ... + 104142953.

It is an arithmetic number, because the mean of its divisors is an integer number (6248559420).

Almost surely, 2^61860737961 is an apocalyptic number.

It is an amenable number.

61860737961 is a deficient number, since it is larger than the sum of its proper divisors (38116212759).

61860737961 is a wasteful number, since it uses less digits than its factorization.

61860737961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208285333 (or 208285327 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 61860737961 in words is "sixty-one billion, eight hundred sixty million, seven hundred thirty-seven thousand, nine hundred sixty-one".