2153456635644 has 24 divisors (see below), whose sum is σ = 5583035722320. Its totient is φ = 717818878512.

The previous prime is 2153456635607. The next prime is 2153456635663. The reversal of 2153456635644 is 4465366543512.

2153456635644 is a `hidden beast` number, since 2 + 1 + 5 + 3 + 4 + 566 + 35 + 6 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9969706539 + ... + 9969706754.

It is an arithmetic number, because the mean of its divisors is an integer number (232626488430).

Almost surely, 2^{2153456635644} is an apocalyptic number.

It is an amenable number.

2153456635644 is an abundant number, since it is smaller than the sum of its proper divisors (3429579086676).

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

2153456635644 is a wasteful number, since it uses less digits than its factorization.

2153456635644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19939413306 (or 19939413298 counting only the distinct ones).

The product of its digits is 31104000, while the sum is 54.

The spelling of 2153456635644 in words is "two trillion, one hundred fifty-three billion, four hundred fifty-six million, six hundred thirty-five thousand, six hundred forty-four".