20266502102 has 32 divisors (see below), whose sum is σ = 38466696960. Its totient is φ = 7778184480.

The previous prime is 20266502099. The next prime is 20266502107. The reversal of 20266502102 is 20120566202.

It is a super-2 number, since 2×20266502102² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20266502107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 971777 + ... + 992412.

It is an arithmetic number, because the mean of its divisors is an integer number (1202084280).

Almost surely, 2^20266502102 is an apocalyptic number.

20266502102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20266502102 is a deficient number, since it is larger than the sum of its proper divisors (18200194858).

20266502102 is a wasteful number, since it uses less digits than its factorization.

20266502102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964276.

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 20266502102 in words is "twenty billion, two hundred sixty-six million, five hundred two thousand, one hundred two".