21896755769812 has 24 divisors (see below), whose sum is σ = 47774739862080. Its totient is φ = 8531203546560.

The previous prime is 21896755769807. The next prime is 21896755769831.

21896755769812 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×21896755769812² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35546681137 + ... + 35546681752.

It is an arithmetic number, because the mean of its divisors is an integer number (1990614160920).

Almost surely, 2^{21896755769812} is an apocalyptic number.

21896755769812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21896755769812 is an abundant number, since it is smaller than the sum of its proper divisors (25877984092268).

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

21896755769812 is a wasteful number, since it uses less digits than its factorization.

21896755769812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71093362911 (or 71093362909 counting only the distinct ones).

The product of its digits is 914457600, while the sum is 76.

The spelling of 21896755769812 in words is "twenty-one trillion, eight hundred ninety-six billion, seven hundred fifty-five million, seven hundred sixty-nine thousand, eight hundred twelve".