1150501121551 has 4 divisors (see below), whose sum is σ = 1150530682504. Its totient is φ = 1150471560600.

The previous prime is 1150501121509. The next prime is 1150501121569. The reversal of 1150501121551 is 1551211050511.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1150501121551 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 (1150501121051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14722020 + ... + 14799961.

It is an arithmetic number, because the mean of its divisors is an integer number (287632670626).

Almost surely, 2^{1150501121551} is an apocalyptic number.

1150501121551 is a deficient number, since it is larger than the sum of its proper divisors (29560953).

1150501121551 is an equidigital number, since it uses as much as digits as its factorization.

1150501121551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29560952.

The product of its (nonzero) digits is 1250, while the sum is 28.

The spelling of 1150501121551 in words is "one trillion, one hundred fifty billion, five hundred one million, one hundred twenty-one thousand, five hundred fifty-one".