2154571826317 has 4 divisors (see below), whose sum is σ = 2154597792480. Its totient is φ = 2154545860156.

The previous prime is 2154571826299. The next prime is 2154571826333. The reversal of 2154571826317 is 7136281754512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2154571826317 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 (2154571826917) 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, 12858217 + ... + 13024702.

It is an arithmetic number, because the mean of its divisors is an integer number (538649448120).

Almost surely, 2^{2154571826317} is an apocalyptic number.

It is an amenable number.

2154571826317 is a deficient number, since it is larger than the sum of its proper divisors (25966163).

2154571826317 is an equidigital number, since it uses as much as digits as its factorization.

2154571826317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25966162.

The product of its digits is 2822400, while the sum is 52.

The spelling of 2154571826317 in words is "two trillion, one hundred fifty-four billion, five hundred seventy-one million, eight hundred twenty-six thousand, three hundred seventeen".