61051615516 has 24 divisors (see below), whose sum is σ = 111117217904. Its totient is φ = 29327114880.

The previous prime is 61051615511. The next prime is 61051615519. The reversal of 61051615516 is 61551615016.

It is a super-2 number, since 2×61051615516² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61051615511) 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, 2898945 + ... + 2919928.

Almost surely, 2^61051615516 is an apocalyptic number.

It is an amenable number.

61051615516 is a deficient number, since it is larger than the sum of its proper divisors (50065602388).

61051615516 is a wasteful number, since it uses less digits than its factorization.

61051615516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5818981 (or 5818979 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 61051615516 in words is "sixty-one billion, fifty-one million, six hundred fifteen thousand, five hundred sixteen".