19542115653 has 32 divisors (see below), whose sum is σ = 27156954240. Its totient is φ = 12484792320.

The previous prime is 19542115627. The next prime is 19542115661. The reversal of 19542115653 is 35651124591.

It is not a de Polignac number, because 19542115653 - 2¹² = 19542111557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19542115603) 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, 7154298 + ... + 7157028.

It is an arithmetic number, because the mean of its divisors is an integer number (848654820).

Almost surely, 2^19542115653 is an apocalyptic number.

It is an amenable number.

19542115653 is a deficient number, since it is larger than the sum of its proper divisors (7614838587).

19542115653 is a wasteful number, since it uses less digits than its factorization.

19542115653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349.

The product of its digits is 162000, while the sum is 42.

The spelling of 19542115653 in words is "nineteen billion, five hundred forty-two million, one hundred fifteen thousand, six hundred fifty-three".