11505540151 has 8 divisors (see below), whose sum is σ = 13152582144. Its totient is φ = 9859346520.

The previous prime is 11505540103. The next prime is 11505540199. The reversal of 11505540151 is 15104550511.

It is an interprime number because it is at equal distance from previous prime (11505540103) and next prime (11505540199).

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

It is a cyclic number.

It is not a de Polignac number, because 11505540151 - 2²¹ = 11503442999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11505540751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182755 + ... + 237508.

It is an arithmetic number, because the mean of its divisors is an integer number (1644072768).

Almost surely, 2^11505540151 is an apocalyptic number.

11505540151 is a deficient number, since it is larger than the sum of its proper divisors (1647041993).

11505540151 is an equidigital number, since it uses as much as digits as its factorization.

11505540151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424181.

The product of its (nonzero) digits is 2500, while the sum is 28.

The spelling of 11505540151 in words is "eleven billion, five hundred five million, five hundred forty thousand, one hundred fifty-one".