61155291320474 has 8 divisors (see below), whose sum is σ = 98789316748500. Its totient is φ = 28225519070976.

The previous prime is 61155291320443. The next prime is 61155291320603. The reversal of 61155291320474 is 47402319255116.

It can be written as a sum of positive squares in 2 ways, for example, as 61034921875225 + 120369445249 = 7812485^2 + 346943^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1176063294599 + ... + 1176063294650.

Almost surely, 2^{61155291320474} is an apocalyptic number.

61155291320474 is a deficient number, since it is larger than the sum of its proper divisors (37634025428026).

61155291320474 is a wasteful number, since it uses less digits than its factorization.

61155291320474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2352126589264.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 61155291320474 in words is "sixty-one trillion, one hundred fifty-five billion, two hundred ninety-one million, three hundred twenty thousand, four hundred seventy-four".