11947957446 has 16 divisors (see below), whose sum is σ = 24054167808. Its totient is φ = 3956277000.

The previous prime is 11947957433. The next prime is 11947957471. The reversal of 11947957446 is 64475974911.

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, 6592890 + ... + 6594701.

It is an arithmetic number, because the mean of its divisors is an integer number (1503385488).

Almost surely, 2^11947957446 is an apocalyptic number.

11947957446 is an abundant number, since it is smaller than the sum of its proper divisors (12106210362).

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

11947957446 is a wasteful number, since it uses less digits than its factorization.

11947957446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13187747.

The product of its digits is 7620480, while the sum is 57.

The spelling of 11947957446 in words is "eleven billion, nine hundred forty-seven million, nine hundred fifty-seven thousand, four hundred forty-six".