61159962361 has 4 divisors (see below), whose sum is σ = 61190107300. Its totient is φ = 61129817424.

The previous prime is 61159962349. The next prime is 61159962427. The reversal of 61159962361 is 16326995116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60981339136 + 178623225 = 246944^2 + 13365^2 .

It is a cyclic number.

It is not a de Polignac number, because 61159962361 - 2⁷ = 61159962233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61159962301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15069426 + ... + 15073483.

It is an arithmetic number, because the mean of its divisors is an integer number (15297526825).

Almost surely, 2^61159962361 is an apocalyptic number.

It is an amenable number.

61159962361 is a deficient number, since it is larger than the sum of its proper divisors (30144939).

61159962361 is a wasteful number, since it uses less digits than its factorization.

61159962361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30144938.

The product of its digits is 524880, while the sum is 49.

The spelling of 61159962361 in words is "sixty-one billion, one hundred fifty-nine million, nine hundred sixty-two thousand, three hundred sixty-one".