19121432744 has 32 divisors (see below), whose sum is σ = 36049268640. Its totient is φ = 9508363200.

The previous prime is 19121432731. The next prime is 19121432761. The reversal of 19121432744 is 44723412191.

It is a junction number, because it is equal to n+sod(n) for n = 19121432698 and 19121432707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2854439 + ... + 2861129.

It is an arithmetic number, because the mean of its divisors is an integer number (1126539645).

Almost surely, 2^19121432744 is an apocalyptic number.

It is an amenable number.

19121432744 is a deficient number, since it is larger than the sum of its proper divisors (16927835896).

19121432744 is a wasteful number, since it uses less digits than its factorization.

19121432744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8601 (or 8597 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The spelling of 19121432744 in words is "nineteen billion, one hundred twenty-one million, four hundred thirty-two thousand, seven hundred forty-four".