12901432776 has 32 divisors (see below), whose sum is σ = 32258990400. Its totient is φ = 4299756480.

The previous prime is 12901432729. The next prime is 12901432799. The reversal of 12901432776 is 67723410921.

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, 112245 + ... + 195963.

It is an arithmetic number, because the mean of its divisors is an integer number (1008093450).

Almost surely, 2^12901432776 is an apocalyptic number.

It is an amenable number.

12901432776 is an abundant number, since it is smaller than the sum of its proper divisors (19357557624).

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

12901432776 is a wasteful number, since it uses less digits than its factorization.

12901432776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90149 (or 90145 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 42.

The spelling of 12901432776 in words is "twelve billion, nine hundred one million, four hundred thirty-two thousand, seven hundred seventy-six".