2115215150551 has 4 divisors (see below), whose sum is σ = 2134983516552. Its totient is φ = 2095446784552.

The previous prime is 2115215150519. The next prime is 2115215150561. The reversal of 2115215150551 is 1550515125112.

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 2115215150551 - 2⁵ = 2115215150519 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 (2115215150501) 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, 9884182840 + ... + 9884183053.

It is an arithmetic number, because the mean of its divisors is an integer number (533745879138).

Almost surely, 2^{2115215150551} is an apocalyptic number.

2115215150551 is a deficient number, since it is larger than the sum of its proper divisors (19768366001).

2115215150551 is a wasteful number, since it uses less digits than its factorization.

2115215150551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19768366000.

The product of its (nonzero) digits is 12500, while the sum is 34.

The spelling of 2115215150551 in words is "two trillion, one hundred fifteen billion, two hundred fifteen million, one hundred fifty thousand, five hundred fifty-one".