20146050987 has 32 divisors (see below), whose sum is σ = 28707909120. Its totient is φ = 12529520640.

The previous prime is 20146050983. The next prime is 20146051007. The reversal of 20146050987 is 78905064102.

It is not a de Polignac number, because 20146050987 - 2² = 20146050983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20146050983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4032363 + ... + 4037355.

It is an arithmetic number, because the mean of its divisors is an integer number (897122160).

Almost surely, 2^20146050987 is an apocalyptic number.

20146050987 is a deficient number, since it is larger than the sum of its proper divisors (8561858133).

20146050987 is a wasteful number, since it uses less digits than its factorization.

20146050987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6083.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 20146050987 in words is "twenty billion, one hundred forty-six million, fifty thousand, nine hundred eighty-seven".