20607470187 has 8 divisors (see below), whose sum is σ = 27824432640. Its totient is φ = 13564410600.

The previous prime is 20607470179. The next prime is 20607470239. The reversal of 20607470187 is 78107470602.

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

It is not a de Polignac number, because 20607470187 - 2³ = 20607470179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20607470137) 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, 43475439 + ... + 43475912.

It is an arithmetic number, because the mean of its divisors is an integer number (3478054080).

Almost surely, 2^20607470187 is an apocalyptic number.

20607470187 is a deficient number, since it is larger than the sum of its proper divisors (7216962453).

20607470187 is an equidigital number, since it uses as much as digits as its factorization.

20607470187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86951433.

The product of its (nonzero) digits is 131712, while the sum is 42.

The spelling of 20607470187 in words is "twenty billion, six hundred seven million, four hundred seventy thousand, one hundred eighty-seven".