21436433463412 has 24 divisors (see below), whose sum is σ = 41150200264992. Its totient is φ = 9690000055200.

The previous prime is 21436433463397. The next prime is 21436433463413.

21436433463412 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21436433463413) 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, 1345825378 + ... + 1345841305.

It is an arithmetic number, because the mean of its divisors is an integer number (1714591677708).

Almost surely, 2^{21436433463412} is an apocalyptic number.

21436433463412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21436433463412 is a deficient number, since it is larger than the sum of its proper divisors (19713766801580).

21436433463412 is a wasteful number, since it uses less digits than its factorization.

21436433463412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691666879 (or 2691666877 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 46.

The spelling of 21436433463412 in words is "twenty-one trillion, four hundred thirty-six billion, four hundred thirty-three million, four hundred sixty-three thousand, four hundred twelve".