61734341657 has 8 divisors (see below), whose sum is σ = 63054291456. Its totient is φ = 60414660832.

The previous prime is 61734341621. The next prime is 61734341659. The reversal of 61734341657 is 75614343716.

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 61734341657 - 2⁸ = 61734341401 is a prime.

It is a super-2 number, since 2×61734341657² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61734341659) 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, 436613 + ... + 560445.

It is an arithmetic number, because the mean of its divisors is an integer number (7881786432).

Almost surely, 2^61734341657 is an apocalyptic number.

It is an amenable number.

61734341657 is a deficient number, since it is larger than the sum of its proper divisors (1319949799).

61734341657 is a wasteful number, since it uses less digits than its factorization.

61734341657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134487.

The product of its digits is 1270080, while the sum is 47.

The spelling of 61734341657 in words is "sixty-one billion, seven hundred thirty-four million, three hundred forty-one thousand, six hundred fifty-seven".