61181154876 has 96 divisors (see below), whose sum is σ = 151362086400. Its totient is φ = 19194126336.

The previous prime is 61181154869. The next prime is 61181154883. The reversal of 61181154876 is 67845118116.

It is an interprime number because it is at equal distance from previous prime (61181154869) and next prime (61181154883).

It is a super-2 number, since 2×61181154876² (a number of 22 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, 9043071 + ... + 9049833.

It is an arithmetic number, because the mean of its divisors is an integer number (1576688400).

Almost surely, 2^61181154876 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61181154876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75681043200).

61181154876 is an abundant number, since it is smaller than the sum of its proper divisors (90180931524).

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

61181154876 is a wasteful number, since it uses less digits than its factorization.

61181154876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7315 (or 7313 counting only the distinct ones).

The product of its digits is 322560, while the sum is 48.

The spelling of 61181154876 in words is "sixty-one billion, one hundred eighty-one million, one hundred fifty-four thousand, eight hundred seventy-six".