19359701421 has 8 divisors (see below), whose sum is σ = 26176497984. Its totient is φ = 12724686240.

The previous prime is 19359701377. The next prime is 19359701443. The reversal of 19359701421 is 12410795391.

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

It is not a de Polignac number, because 19359701421 - 2¹⁰ = 19359700397 is a prime.

It is a super-2 number, since 2×19359701421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19359701461) 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, 45445096 + ... + 45445521.

It is an arithmetic number, because the mean of its divisors is an integer number (3272062248).

Almost surely, 2^19359701421 is an apocalyptic number.

It is an amenable number.

19359701421 is a deficient number, since it is larger than the sum of its proper divisors (6816796563).

19359701421 is an equidigital number, since it uses as much as digits as its factorization.

19359701421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90890691.

The product of its (nonzero) digits is 68040, while the sum is 42.

It can be divided in two parts, 1935970 and 1421, that added together give a palindrome (1937391).

The spelling of 19359701421 in words is "nineteen billion, three hundred fifty-nine million, seven hundred one thousand, four hundred twenty-one".