213337670651 has 4 divisors (see below), whose sum is σ = 243814480752. Its totient is φ = 182860860552.

The previous prime is 213337670621. The next prime is 213337670701. The reversal of 213337670651 is 156076733312.

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 213337670651 - 2³⁰ = 212263928827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213337670621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15238405040 + ... + 15238405053.

It is an arithmetic number, because the mean of its divisors is an integer number (60953620188).

Almost surely, 2^213337670651 is an apocalyptic number.

213337670651 is a deficient number, since it is larger than the sum of its proper divisors (30476810101).

213337670651 is an equidigital number, since it uses as much as digits as its factorization.

213337670651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30476810100.

The product of its (nonzero) digits is 476280, while the sum is 44.

The spelling of 213337670651 in words is "two hundred thirteen billion, three hundred thirty-seven million, six hundred seventy thousand, six hundred fifty-one".