11257454642 has 32 divisors (see below), whose sum is σ = 19439172480. Its totient is φ = 4789549440.

The previous prime is 11257454591. The next prime is 11257454693. The reversal of 11257454642 is 24645475211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11257454591) and next prime (11257454693).

It is a self number, because there is not a number n which added to its sum of digits gives 11257454642.

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, 1564958 + ... + 1572134.

It is an arithmetic number, because the mean of its divisors is an integer number (607474140).

Almost surely, 2^11257454642 is an apocalyptic number.

11257454642 is a deficient number, since it is larger than the sum of its proper divisors (8181717838).

11257454642 is a wasteful number, since it uses less digits than its factorization.

11257454642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7986.

The product of its digits is 268800, while the sum is 41.

The spelling of 11257454642 in words is "eleven billion, two hundred fifty-seven million, four hundred fifty-four thousand, six hundred forty-two".