10115211551 has 4 divisors (see below), whose sum is σ = 10150954632. Its totient is φ = 10079468472.

The previous prime is 10115211523. The next prime is 10115211649. The reversal of 10115211551 is 15511251101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15511251101 = 7901 ⋅1963201.

It is a cyclic number.

It is not a de Polignac number, because 10115211551 - 2⁶ = 10115211487 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 (10115211451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17871116 + ... + 17871681.

It is an arithmetic number, because the mean of its divisors is an integer number (2537738658).

Almost surely, 2^10115211551 is an apocalyptic number.

10115211551 is a deficient number, since it is larger than the sum of its proper divisors (35743081).

10115211551 is an equidigital number, since it uses as much as digits as its factorization.

10115211551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35743080.

The product of its (nonzero) digits is 250, while the sum is 23.

Adding to 10115211551 its reverse (15511251101), we get a palindrome (25626462652).

The spelling of 10115211551 in words is "ten billion, one hundred fifteen million, two hundred eleven thousand, five hundred fifty-one".