10643212556 has 12 divisors (see below), whose sum is σ = 19435431792. Its totient is φ = 5090232048.

The previous prime is 10643212523. The next prime is 10643212589. The reversal of 10643212556 is 65521234601.

It is an interprime number because it is at equal distance from previous prime (10643212523) and next prime (10643212589).

It is a super-2 number, since 2×10643212556² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57843455 + ... + 57843638.

It is an arithmetic number, because the mean of its divisors is an integer number (1619619316).

Almost surely, 2^10643212556 is an apocalyptic number.

It is an amenable number.

10643212556 is a deficient number, since it is larger than the sum of its proper divisors (8792219236).

10643212556 is a wasteful number, since it uses less digits than its factorization.

10643212556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115687120 (or 115687118 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 10643212556 in words is "ten billion, six hundred forty-three million, two hundred twelve thousand, five hundred fifty-six".