61155160156500 has 96 divisors (see below), whose sum is σ = 178124236617600. Its totient is φ = 16304342137600.

The previous prime is 61155160156463. The next prime is 61155160156511. The reversal of 61155160156500 is 565106155116.

It is a super-2 number, since 2×61155160156500² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1989991 + ... + 11237009.

It is an arithmetic number, because the mean of its divisors is an integer number (1855460798100).

Almost surely, 2^{61155160156500} is an apocalyptic number.

61155160156500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61155160156500 is an abundant number, since it is smaller than the sum of its proper divisors (116969076461100).

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

61155160156500 is a wasteful number, since it uses less digits than its factorization.

61155160156500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9251450 (or 9251438 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 42.

The spelling of 61155160156500 in words is "sixty-one trillion, one hundred fifty-five billion, one hundred sixty million, one hundred fifty-six thousand, five hundred".