20964738106 has 32 divisors (see below), whose sum is σ = 34379089920. Its totient is φ = 9530571456.

The previous prime is 20964738101. The next prime is 20964738121. The reversal of 20964738106 is 60183746902.

It is not an unprimeable number, because it can be changed into a prime (20964738101) 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, 436140 + ... + 481816.

It is an arithmetic number, because the mean of its divisors is an integer number (1074346560).

Almost surely, 2^20964738106 is an apocalyptic number.

20964738106 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20964738106 is a deficient number, since it is larger than the sum of its proper divisors (13414351814).

20964738106 is a wasteful number, since it uses less digits than its factorization.

20964738106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45958.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 20964738106 in words is "twenty billion, nine hundred sixty-four million, seven hundred thirty-eight thousand, one hundred six".