45697782421561 has 4 divisors (see below), whose sum is σ = 45811741979124. Its totient is φ = 45583822864000.

The previous prime is 45697782421553. The next prime is 45697782421591. The reversal of 45697782421561 is 16512428779654.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30090984525625 + 15606797895936 = 5485525^2 + 3950544^2 .

It is a cyclic number.

It is not a de Polignac number, because 45697782421561 - 2³ = 45697782421553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45697782421591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56979778180 + ... + 56979778981.

It is an arithmetic number, because the mean of its divisors is an integer number (11452935494781).

Almost surely, 2^{45697782421561} is an apocalyptic number.

It is an amenable number.

45697782421561 is a deficient number, since it is larger than the sum of its proper divisors (113959557563).

45697782421561 is a wasteful number, since it uses less digits than its factorization.

45697782421561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113959557562.

The product of its digits is 203212800, while the sum is 67.

The spelling of 45697782421561 in words is "forty-five trillion, six hundred ninety-seven billion, seven hundred eighty-two million, four hundred twenty-one thousand, five hundred sixty-one".