2154262643544 has 32 divisors (see below), whose sum is σ = 5875261755840. Its totient is φ = 652806861600.

The previous prime is 2154262643443. The next prime is 2154262643551. The reversal of 2154262643544 is 4453462624512.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2154262643493 and 2154262643502.

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, 4080042622 + ... + 4080043149.

It is an arithmetic number, because the mean of its divisors is an integer number (183601929870).

Almost surely, 2^{2154262643544} is an apocalyptic number.

2154262643544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2154262643544 is an abundant number, since it is smaller than the sum of its proper divisors (3720999112296).

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

2154262643544 is a wasteful number, since it uses less digits than its factorization.

2154262643544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8160085791 (or 8160085787 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 48.

The spelling of 2154262643544 in words is "two trillion, one hundred fifty-four billion, two hundred sixty-two million, six hundred forty-three thousand, five hundred forty-four".