19545490554 has 32 divisors (see below), whose sum is σ = 39595336704. Its totient is φ = 6431237040.

The previous prime is 19545490541. The next prime is 19545490571. The reversal of 19545490554 is 45509454591.

It is a junction number, because it is equal to n+sod(n) for n = 19545490497 and 19545490506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597097 + ... + 628979.

It is an arithmetic number, because the mean of its divisors is an integer number (1237354272).

Almost surely, 2^19545490554 is an apocalyptic number.

19545490554 is an abundant number, since it is smaller than the sum of its proper divisors (20049846150).

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

19545490554 is a wasteful number, since it uses less digits than its factorization.

19545490554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33202.

The product of its (nonzero) digits is 3240000, while the sum is 51.

The spelling of 19545490554 in words is "nineteen billion, five hundred forty-five million, four hundred ninety thousand, five hundred fifty-four".