19850554672 has 40 divisors (see below), whose sum is σ = 41673120944. Its totient is φ = 9105571584.

The previous prime is 19850554643. The next prime is 19850554673. The reversal of 19850554672 is 27645505891.

It is a happy number.

It is a super-2 number, since 2×19850554672² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (19850554673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258843 + ... + 326650.

Almost surely, 2^19850554672 is an apocalyptic number.

It is an amenable number.

19850554672 is an abundant number, since it is smaller than the sum of its proper divisors (21822566272).

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

19850554672 is a wasteful number, since it uses less digits than its factorization.

19850554672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585677 (or 585671 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 52.

The spelling of 19850554672 in words is "nineteen billion, eight hundred fifty million, five hundred fifty-four thousand, six hundred seventy-two".