61175657001 has 4 divisors (see below), whose sum is σ = 81567542672. Its totient is φ = 40783771332.

The previous prime is 61175656991. The next prime is 61175657017. The reversal of 61175657001 is 10075657116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-61175657001 is a prime.

It is a super-2 number, since 2×61175657001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61175657051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10195942831 + ... + 10195942836.

It is an arithmetic number, because the mean of its divisors is an integer number (20391885668).

Almost surely, 2^61175657001 is an apocalyptic number.

It is an amenable number.

61175657001 is a deficient number, since it is larger than the sum of its proper divisors (20391885671).

61175657001 is a wasteful number, since it uses less digits than its factorization.

61175657001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20391885670.

The product of its (nonzero) digits is 44100, while the sum is 39.

The spelling of 61175657001 in words is "sixty-one billion, one hundred seventy-five million, six hundred fifty-seven thousand, one".