42402561653 has 8 divisors (see below), whose sum is σ = 42883718040. Its totient is φ = 41921510400.

The previous prime is 42402561647. The next prime is 42402561713. The reversal of 42402561653 is 35616520424.

It can be written as a sum of positive squares in 4 ways, for example, as 18328556689 + 24074004964 = 135383^2 + 155158^2 .

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 42402561653 - 2⁴ = 42402561637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42402561353) 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, 1018853 + ... + 1059653.

It is an arithmetic number, because the mean of its divisors is an integer number (5360464755).

Almost surely, 2^42402561653 is an apocalyptic number.

It is an amenable number.

42402561653 is a deficient number, since it is larger than the sum of its proper divisors (481156387).

42402561653 is a wasteful number, since it uses less digits than its factorization.

42402561653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52567.

The product of its (nonzero) digits is 172800, while the sum is 38.

The spelling of 42402561653 in words is "forty-two billion, four hundred two million, five hundred sixty-one thousand, six hundred fifty-three".