19551047043 has 16 divisors (see below), whose sum is σ = 28454493312. Its totient is φ = 11842200000.

The previous prime is 19551046993. The next prime is 19551047053. The reversal of 19551047043 is 34074015591.

It is not a de Polignac number, because 19551047043 - 2¹² = 19551042947 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19551046992 and 19551047010.

It is not an unprimeable number, because it can be changed into a prime (19551047053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115333 + ... + 228918.

It is an arithmetic number, because the mean of its divisors is an integer number (1778405832).

Almost surely, 2^19551047043 is an apocalyptic number.

19551047043 is a deficient number, since it is larger than the sum of its proper divisors (8903446269).

19551047043 is a wasteful number, since it uses less digits than its factorization.

19551047043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345986.

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 19551047043 in words is "nineteen billion, five hundred fifty-one million, forty-seven thousand, forty-three".