61051550961 has 8 divisors (see below), whose sum is σ = 81718808544. Its totient is φ = 40542663680.

The previous prime is 61051550927. The next prime is 61051550981. The reversal of 61051550961 is 16905515016.

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 61051550961 - 2¹¹ = 61051548913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61051550981) 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, 39591675 + ... + 39593216.

It is an arithmetic number, because the mean of its divisors is an integer number (10214851068).

Almost surely, 2^61051550961 is an apocalyptic number.

It is an amenable number.

61051550961 is a deficient number, since it is larger than the sum of its proper divisors (20667257583).

61051550961 is a wasteful number, since it uses less digits than its factorization.

61051550961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79185151.

The product of its (nonzero) digits is 40500, while the sum is 39.

The spelling of 61051550961 in words is "sixty-one billion, fifty-one million, five hundred fifty thousand, nine hundred sixty-one".