2151735113391 has 4 divisors (see below), whose sum is σ = 2868980151192. Its totient is φ = 1434490075592.

The previous prime is 2151735113387. The next prime is 2151735113417. The reversal of 2151735113391 is 1933115371512.

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

It is a cyclic number.

It is not a de Polignac number, because 2151735113391 - 2² = 2151735113387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151735113791) 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, 358622518896 + ... + 358622518901.

It is an arithmetic number, because the mean of its divisors is an integer number (717245037798).

Almost surely, 2^{2151735113391} is an apocalyptic number.

2151735113391 is a deficient number, since it is larger than the sum of its proper divisors (717245037801).

2151735113391 is an equidigital number, since it uses as much as digits as its factorization.

2151735113391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717245037800.

The product of its digits is 85050, while the sum is 42.

The spelling of 2151735113391 in words is "two trillion, one hundred fifty-one billion, seven hundred thirty-five million, one hundred thirteen thousand, three hundred ninety-one".