19554401142 has 96 divisors (see below), whose sum is σ = 44640460800. Its totient is φ = 6174374976.

The previous prime is 19554401137. The next prime is 19554401143. The reversal of 19554401142 is 24110445591.

19554401142 is a `hidden beast` number, since 19 + 554 + 40 + 11 + 42 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 19554401097 and 19554401106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19554401143) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 22658203 + ... + 22659065.

It is an arithmetic number, because the mean of its divisors is an integer number (465004800).

Almost surely, 2^19554401142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19554401142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22320230400).

19554401142 is an abundant number, since it is smaller than the sum of its proper divisors (25086059658).

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

19554401142 is a wasteful number, since it uses less digits than its factorization.

19554401142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1362 (or 1359 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The spelling of 19554401142 in words is "nineteen billion, five hundred fifty-four million, four hundred one thousand, one hundred forty-two".