45451581657 has 8 divisors (see below), whose sum is σ = 60659231040. Its totient is φ = 30272493360.

The previous prime is 45451581647. The next prime is 45451581677. The reversal of 45451581657 is 75618515454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45451581657 - 2¹⁰ = 45451580633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (45451581647) 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, 7136557 + ... + 7142922.

It is an arithmetic number, because the mean of its divisors is an integer number (7582403880).

Almost surely, 2^45451581657 is an apocalyptic number.

It is an amenable number.

45451581657 is a deficient number, since it is larger than the sum of its proper divisors (15207649383).

45451581657 is a wasteful number, since it uses less digits than its factorization.

45451581657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14280543.

The product of its digits is 3360000, while the sum is 51.

The spelling of 45451581657 in words is "forty-five billion, four hundred fifty-one million, five hundred eighty-one thousand, six hundred fifty-seven".