19650550044 has 48 divisors (see below), whose sum is σ = 48456938880. Its totient is φ = 6180696000.

The previous prime is 19650550027. The next prime is 19650550061. The reversal of 19650550044 is 44005505691.

It is an interprime number because it is at equal distance from previous prime (19650550027) and next prime (19650550061).

It is a super-2 number, since 2×19650550044² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19650549984 and 19650550011.

It is a congruent number.

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, 114459 + ... + 228914.

It is an arithmetic number, because the mean of its divisors is an integer number (1009519560).

Almost surely, 2^19650550044 is an apocalyptic number.

It is an amenable number.

19650550044 is an abundant number, since it is smaller than the sum of its proper divisors (28806388836).

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

19650550044 is a wasteful number, since it uses less digits than its factorization.

19650550044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343650 (or 343648 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 19650550044 in words is "nineteen billion, six hundred fifty million, five hundred fifty thousand, forty-four".