61056166031 has 4 divisors (see below), whose sum is σ = 69778475472. Its totient is φ = 52333856592.

The previous prime is 61056165997. The next prime is 61056166057. The reversal of 61056166031 is 13066165016.

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

It is a cyclic number.

It is not a de Polignac number, because 61056166031 - 2²² = 61051971727 is a prime.

It is a super-2 number, since 2×61056166031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61056165982 and 61056166000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61056166231) 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, 4361154710 + ... + 4361154723.

It is an arithmetic number, because the mean of its divisors is an integer number (17444618868).

Almost surely, 2^61056166031 is an apocalyptic number.

61056166031 is a deficient number, since it is larger than the sum of its proper divisors (8722309441).

61056166031 is an equidigital number, since it uses as much as digits as its factorization.

61056166031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8722309440.

The product of its (nonzero) digits is 19440, while the sum is 35.

The spelling of 61056166031 in words is "sixty-one billion, fifty-six million, one hundred sixty-six thousand, thirty-one".