11551320542 has 8 divisors (see below), whose sum is σ = 17924463000. Its totient is φ = 5576499544.

The previous prime is 11551320499. The next prime is 11551320551. The reversal of 11551320542 is 24502315511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

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, 99580292 + ... + 99580407.

It is an arithmetic number, because the mean of its divisors is an integer number (2240557875).

Almost surely, 2^11551320542 is an apocalyptic number.

11551320542 is a deficient number, since it is larger than the sum of its proper divisors (6373142458).

11551320542 is a wasteful number, since it uses less digits than its factorization.

11551320542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199160730.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 11551320542 in words is "eleven billion, five hundred fifty-one million, three hundred twenty thousand, five hundred forty-two".