20147355102 has 16 divisors (see below), whose sum is σ = 46051097472. Its totient is φ = 5756387160.

The previous prime is 20147355101. The next prime is 20147355127. The reversal of 20147355102 is 20155374102.

It is a self number, because there is not a number n which added to its sum of digits gives 20147355102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20147355101) 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, 239849424 + ... + 239849507.

It is an arithmetic number, because the mean of its divisors is an integer number (2878193592).

Almost surely, 2^20147355102 is an apocalyptic number.

20147355102 is an abundant number, since it is smaller than the sum of its proper divisors (25903742370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20147355102 is a wasteful number, since it uses less digits than its factorization.

20147355102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479698943.

The product of its (nonzero) digits is 8400, while the sum is 30.

The spelling of 20147355102 in words is "twenty billion, one hundred forty-seven million, three hundred fifty-five thousand, one hundred two".