20623661153 has 8 divisors (see below), whose sum is σ = 20737242240. Its totient is φ = 20510383680.

The previous prime is 20623661033. The next prime is 20623661173. The reversal of 20623661153 is 35116632602.

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

It is a cyclic number.

It is not a de Polignac number, because 20623661153 - 2¹² = 20623657057 is a prime.

It is a super-2 number, since 2×20623661153² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20623661173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61001 + ... + 212057.

It is an arithmetic number, because the mean of its divisors is an integer number (2592155280).

Almost surely, 2^20623661153 is an apocalyptic number.

It is an amenable number.

20623661153 is a deficient number, since it is larger than the sum of its proper divisors (113581087).

20623661153 is a wasteful number, since it uses less digits than its factorization.

20623661153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151807.

The product of its (nonzero) digits is 38880, while the sum is 35.

The spelling of 20623661153 in words is "twenty billion, six hundred twenty-three million, six hundred sixty-one thousand, one hundred fifty-three".