11420957640 has 64 divisors (see below), whose sum is σ = 34284850560. Its totient is φ = 3043635200.

The previous prime is 11420957633. The next prime is 11420957677. The reversal of 11420957640 is 4675902411.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162397 + ... + 221843.

It is an arithmetic number, because the mean of its divisors is an integer number (535700790).

Almost surely, 2^11420957640 is an apocalyptic number.

11420957640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11420957640 is an abundant number, since it is smaller than the sum of its proper divisors (22863892920).

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

11420957640 is a wasteful number, since it uses less digits than its factorization.

11420957640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61062 (or 61058 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 11420957640 in words is "eleven billion, four hundred twenty million, nine hundred fifty-seven thousand, six hundred forty".