61012017157 has 12 divisors (see below), whose sum is σ = 75504306720. Its totient is φ = 48273243408.

The previous prime is 61012017151. The next prime is 61012017163. The reversal of 61012017157 is 75171021016.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61012017151) and next prime (61012017163).

It is a de Polignac number, because none of the positive numbers 2^k-61012017157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61012017151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25785807 + ... + 25788172.

It is an arithmetic number, because the mean of its divisors is an integer number (6292025560).

Almost surely, 2^61012017157 is an apocalyptic number.

It is an amenable number.

61012017157 is a deficient number, since it is larger than the sum of its proper divisors (14492289563).

61012017157 is a wasteful number, since it uses less digits than its factorization.

61012017157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51574012 (or 51573999 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 31.

The spelling of 61012017157 in words is "sixty-one billion, twelve million, seventeen thousand, one hundred fifty-seven".