61000100000555 has 8 divisors (see below), whose sum is σ = 73954760413632. Its totient is φ = 48296986391808.

The previous prime is 61000100000527. The next prime is 61000100000557. The reversal of 61000100000555 is 55500000100016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61000100000555 - 2⁶ = 61000100000491 is a prime.

It is a super-2 number, since 2×61000100000555² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61000100000555.

It is not an unprimeable number, because it can be changed into a prime (61000100000557) 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, 62886700547 + ... + 62886701516.

It is an arithmetic number, because the mean of its divisors is an integer number (9244345051704).

Almost surely, 2^{61000100000555} is an apocalyptic number.

61000100000555 is a deficient number, since it is larger than the sum of its proper divisors (12954660413077).

61000100000555 is a wasteful number, since it uses less digits than its factorization.

61000100000555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125773402165.

The product of its (nonzero) digits is 750, while the sum is 23.

The spelling of 61000100000555 in words is "sixty-one trillion, one hundred million, five hundred fifty-five", and thus it is an aban number.