2153662563544 has 32 divisors (see below), whose sum is σ = 4165055125920. Its totient is φ = 1043231014656.

The previous prime is 2153662563539. The next prime is 2153662563583. The reversal of 2153662563544 is 4453652663512.

It is a super-2 number, since 2×2153662563544² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2153662563491 and 2153662563500.

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, 15544524 + ... + 15682459.

It is an arithmetic number, because the mean of its divisors is an integer number (130157972685).

Almost surely, 2^{2153662563544} is an apocalyptic number.

It is an amenable number.

2153662563544 is a deficient number, since it is larger than the sum of its proper divisors (2011392562376).

2153662563544 is a wasteful number, since it uses less digits than its factorization.

2153662563544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31227259 (or 31227255 counting only the distinct ones).

The product of its digits is 15552000, while the sum is 52.

The spelling of 2153662563544 in words is "two trillion, one hundred fifty-three billion, six hundred sixty-two million, five hundred sixty-three thousand, five hundred forty-four".