2151115161019 has 4 divisors (see below), whose sum is σ = 2346671084760. Its totient is φ = 1955559237280.

The previous prime is 2151115161017. The next prime is 2151115161053. The reversal of 2151115161019 is 9101615111512.

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

It is not a de Polignac number, because 2151115161019 - 2¹ = 2151115161017 is a prime.

It is a super-2 number, since 2×2151115161019² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151115161017) 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, 97777961854 + ... + 97777961875.

It is an arithmetic number, because the mean of its divisors is an integer number (586667771190).

Almost surely, 2^{2151115161019} is an apocalyptic number.

2151115161019 is a deficient number, since it is larger than the sum of its proper divisors (195555923741).

2151115161019 is a wasteful number, since it uses less digits than its factorization.

2151115161019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195555923740.

The product of its (nonzero) digits is 2700, while the sum is 34.

The spelling of 2151115161019 in words is "two trillion, one hundred fifty-one billion, one hundred fifteen million, one hundred sixty-one thousand, nineteen".