19752673137 has 4 divisors (see below), whose sum is σ = 26336897520. Its totient is φ = 13168448756.

The previous prime is 19752673103. The next prime is 19752673153. The reversal of 19752673137 is 73137625791.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19752673137 - 2⁸ = 19752672881 is a prime.

It is a super-2 number, since 2×19752673137² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19752673137.

It is not an unprimeable number, because it can be changed into a prime (19752673177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3292112187 + ... + 3292112192.

It is an arithmetic number, because the mean of its divisors is an integer number (6584224380).

Almost surely, 2^19752673137 is an apocalyptic number.

It is an amenable number.

19752673137 is a deficient number, since it is larger than the sum of its proper divisors (6584224383).

19752673137 is an equidigital number, since it uses as much as digits as its factorization.

19752673137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6584224382.

The product of its digits is 1666980, while the sum is 51.

The spelling of 19752673137 in words is "nineteen billion, seven hundred fifty-two million, six hundred seventy-three thousand, one hundred thirty-seven".