20415212106 has 32 divisors (see below), whose sum is σ = 41023584000. Its totient is φ = 6772930560.

The previous prime is 20415212101. The next prime is 20415212107. The reversal of 20415212106 is 60121251402.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20415212101) 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, 1699690 + ... + 1711658.

It is an arithmetic number, because the mean of its divisors is an integer number (1281987000).

Almost surely, 2^20415212106 is an apocalyptic number.

20415212106 is an abundant number, since it is smaller than the sum of its proper divisors (20608371894).

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

20415212106 is a wasteful number, since it uses less digits than its factorization.

20415212106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13294.

The product of its (nonzero) digits is 960, while the sum is 24.

Adding to 20415212106 its reverse (60121251402), we get a palindrome (80536463508).

The spelling of 20415212106 in words is "twenty billion, four hundred fifteen million, two hundred twelve thousand, one hundred six".