213115626551 has 16 divisors (see below), whose sum is σ = 223256936448. Its totient is φ = 203221560000.

The previous prime is 213115626539. The next prime is 213115626557. The reversal of 213115626551 is 155626511312.

It is a cyclic number.

It is not a de Polignac number, because 213115626551 - 2¹⁴ = 213115610167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213115626557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1373546 + ... + 1520808.

It is an arithmetic number, because the mean of its divisors is an integer number (13953558528).

Almost surely, 2^213115626551 is an apocalyptic number.

213115626551 is a deficient number, since it is larger than the sum of its proper divisors (10141309897).

213115626551 is a wasteful number, since it uses less digits than its factorization.

213115626551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148102.

The product of its digits is 54000, while the sum is 38.

The spelling of 213115626551 in words is "two hundred thirteen billion, one hundred fifteen million, six hundred twenty-six thousand, five hundred fifty-one".