61135303656 has 32 divisors (see below), whose sum is σ = 174672296640. Its totient is φ = 17467229568.

The previous prime is 61135303643. The next prime is 61135303657. The reversal of 61135303656 is 65630353116.

It is a super-2 number, since 2×61135303656² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61135303657) 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, 181950141 + ... + 181950476.

It is an arithmetic number, because the mean of its divisors is an integer number (5458509270).

Almost surely, 2^61135303656 is an apocalyptic number.

It is an amenable number.

61135303656 is an abundant number, since it is smaller than the sum of its proper divisors (113536992984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61135303656 is a wasteful number, since it uses less digits than its factorization.

61135303656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363900633 (or 363900629 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 39.

The spelling of 61135303656 in words is "sixty-one billion, one hundred thirty-five million, three hundred three thousand, six hundred fifty-six".