19959157101 has 8 divisors (see below), whose sum is σ = 28659302560. Its totient is φ = 12282558192.

The previous prime is 19959157081. The next prime is 19959157129. The reversal of 19959157101 is 10175195991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19959157101 - 2⁹ = 19959156589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19959156101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255886591 + ... + 255886668.

It is an arithmetic number, because the mean of its divisors is an integer number (3582412820).

Almost surely, 2^19959157101 is an apocalyptic number.

It is an amenable number.

19959157101 is a deficient number, since it is larger than the sum of its proper divisors (8700145459).

19959157101 is a wasteful number, since it uses less digits than its factorization.

19959157101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511773275.

The product of its (nonzero) digits is 127575, while the sum is 48.

The spelling of 19959157101 in words is "nineteen billion, nine hundred fifty-nine million, one hundred fifty-seven thousand, one hundred one".