61241220672178 has 16 divisors (see below), whose sum is σ = 93237630423840. Its totient is φ = 30162056877216.

The previous prime is 61241220672161. The next prime is 61241220672193. The reversal of 61241220672178 is 87127602214216.

It is a super-2 number, since 2×61241220672178² (a number of 28 digits) contains 22 as substring.

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, 8931651 + ... + 14221702.

It is an arithmetic number, because the mean of its divisors is an integer number (5827351901490).

Almost surely, 2^{61241220672178} is an apocalyptic number.

61241220672178 is a deficient number, since it is larger than the sum of its proper divisors (31996409751662).

61241220672178 is a wasteful number, since it uses less digits than its factorization.

61241220672178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23173161.

The product of its (nonzero) digits is 903168, while the sum is 49.

The spelling of 61241220672178 in words is "sixty-one trillion, two hundred forty-one billion, two hundred twenty million, six hundred seventy-two thousand, one hundred seventy-eight".