2153661246042 has 64 divisors (see below), whose sum is σ = 4484451686400. Its totient is φ = 688686909120.

The previous prime is 2153661246007. The next prime is 2153661246049. The reversal of 2153661246042 is 2406421663512.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2153661245985 and 2153661246003.

It is not an unprimeable number, because it can be changed into a prime (2153661246049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 73763667 + ... + 73792857.

It is an arithmetic number, because the mean of its divisors is an integer number (70069557600).

Almost surely, 2^{2153661246042} is an apocalyptic number.

2153661246042 is an abundant number, since it is smaller than the sum of its proper divisors (2330790440358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2153661246042 is a wasteful number, since it uses less digits than its factorization.

2153661246042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31931.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 2153661246042 in words is "two trillion, one hundred fifty-three billion, six hundred sixty-one million, two hundred forty-six thousand, forty-two".