20455992137 has 8 divisors (see below), whose sum is σ = 23411256000. Its totient is φ = 17508973104.

The previous prime is 20455992077. The next prime is 20455992143. The reversal of 20455992137 is 73129955402.

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

It is not a de Polignac number, because 20455992137 - 2¹⁰ = 20455991113 is a prime.

It is a super-2 number, since 2×20455992137² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20455992091 and 20455992100.

It is not an unprimeable number, because it can be changed into a prime (20455997137) 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, 2055887 + ... + 2065812.

It is an arithmetic number, because the mean of its divisors is an integer number (2926407000).

Almost surely, 2^20455992137 is an apocalyptic number.

It is an amenable number.

20455992137 is a deficient number, since it is larger than the sum of its proper divisors (2955263863).

20455992137 is an equidigital number, since it uses as much as digits as its factorization.

20455992137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4122415.

The product of its (nonzero) digits is 680400, while the sum is 47.

The spelling of 20455992137 in words is "twenty billion, four hundred fifty-five million, nine hundred ninety-two thousand, one hundred thirty-seven".