20154255653 has 8 divisors (see below), whose sum is σ = 23162114880. Its totient is φ = 17178566400.

The previous prime is 20154255647. The next prime is 20154255673. The reversal of 20154255653 is 35655245102.

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 20154255653 - 2⁸ = 20154255397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20154255673) 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, 8041148 + ... + 8043653.

It is an arithmetic number, because the mean of its divisors is an integer number (2895264360).

Almost surely, 2^20154255653 is an apocalyptic number.

It is an amenable number.

20154255653 is a deficient number, since it is larger than the sum of its proper divisors (3007859227).

20154255653 is a wasteful number, since it uses less digits than its factorization.

20154255653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16084987.

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 20154255653 in words is "twenty billion, one hundred fifty-four million, two hundred fifty-five thousand, six hundred fifty-three".