61515713338 has 16 divisors (see below), whose sum is σ = 93459776256. Its totient is φ = 30364888320.

The previous prime is 61515713323. The next prime is 61515713377. The reversal of 61515713338 is 83331751516.

It is a super-2 number, since 2×61515713338² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 61515713294 and 61515713303.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557706 + ... + 658837.

It is an arithmetic number, because the mean of its divisors is an integer number (5841236016).

Almost surely, 2^61515713338 is an apocalyptic number.

61515713338 is a deficient number, since it is larger than the sum of its proper divisors (31944062918).

61515713338 is a wasteful number, since it uses less digits than its factorization.

61515713338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216869.

The product of its digits is 226800, while the sum is 43.

The spelling of 61515713338 in words is "sixty-one billion, five hundred fifteen million, seven hundred thirteen thousand, three hundred thirty-eight".