215038877051 has 4 divisors (see below), whose sum is σ = 215074014504. Its totient is φ = 215003739600.

The previous prime is 215038877041. The next prime is 215038877069. The reversal of 215038877051 is 150778830512.

It is a happy number.

215038877051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215038877051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 215038876987 and 215038877005.

It is not an unprimeable number, because it can be changed into a prime (215038877021) 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, 17559545 + ... + 17571786.

It is an arithmetic number, because the mean of its divisors is an integer number (53768503626).

Almost surely, 2^215038877051 is an apocalyptic number.

215038877051 is a deficient number, since it is larger than the sum of its proper divisors (35137453).

215038877051 is an equidigital number, since it uses as much as digits as its factorization.

215038877051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35137452.

The product of its (nonzero) digits is 470400, while the sum is 47.

The spelling of 215038877051 in words is "two hundred fifteen billion, thirty-eight million, eight hundred seventy-seven thousand, fifty-one".