20119091544 has 24 divisors (see below), whose sum is σ = 54489206460. Its totient is φ = 6706363824.

The previous prime is 20119091539. The next prime is 20119091563. The reversal of 20119091544 is 44519091102.

It is a happy number.

20119091544 is a `hidden beast` number, since 20 + 1 + 1 + 9 + 0 + 91 + 544 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 20119091499 and 20119091508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139715842 + ... + 139715985.

Almost surely, 2^20119091544 is an apocalyptic number.

20119091544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20119091544 is an abundant number, since it is smaller than the sum of its proper divisors (34370114916).

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

20119091544 is a wasteful number, since it uses less digits than its factorization.

20119091544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279431839 (or 279431832 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The spelling of 20119091544 in words is "twenty billion, one hundred nineteen million, ninety-one thousand, five hundred forty-four".