19540179795 has 16 divisors (see below), whose sum is σ = 31269290400. Its totient is φ = 10419761664.

The previous prime is 19540179781. The next prime is 19540179839. The reversal of 19540179795 is 59797104591.

It is a happy number.

It is not a de Polignac number, because 19540179795 - 2¹⁶ = 19540114259 is a prime.

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, 4264 + ... + 197733.

It is an arithmetic number, because the mean of its divisors is an integer number (1954330650).

Almost surely, 2^19540179795 is an apocalyptic number.

19540179795 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19540179795 is a deficient number, since it is larger than the sum of its proper divisors (11729110605).

19540179795 is a wasteful number, since it uses less digits than its factorization.

19540179795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208454.

The product of its (nonzero) digits is 3572100, while the sum is 57.

The spelling of 19540179795 in words is "nineteen billion, five hundred forty million, one hundred seventy-nine thousand, seven hundred ninety-five".