61001056017 has 20 divisors (see below), whose sum is σ = 99409129776. Its totient is φ = 36970336440.

The previous prime is 61001056007. The next prime is 61001056019. The reversal of 61001056017 is 71065010016.

It is not a de Polignac number, because 61001056017 - 2⁴ = 61001056001 is a prime.

It is a super-2 number, since 2×61001056017² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (61001056019) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 34230903 + ... + 34232684.

Almost surely, 2^61001056017 is an apocalyptic number.

It is an amenable number.

61001056017 is a deficient number, since it is larger than the sum of its proper divisors (38408073759).

61001056017 is a wasteful number, since it uses less digits than its factorization.

61001056017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68463610 (or 68463601 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The spelling of 61001056017 in words is "sixty-one billion, one million, fifty-six thousand, seventeen".