213740537739 has 16 divisors (see below), whose sum is σ = 289569219840. Its totient is φ = 140210661920.

The previous prime is 213740537729. The next prime is 213740537789. The reversal of 213740537739 is 937735047312.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 213740537739 - 2⁵ = 213740537707 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213740537691 and 213740537700.

It is not an unprimeable number, because it can be changed into a prime (213740537729) 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, 877317 + ... + 1094150.

It is an arithmetic number, because the mean of its divisors is an integer number (18098076240).

Almost surely, 2^213740537739 is an apocalyptic number.

213740537739 is a deficient number, since it is larger than the sum of its proper divisors (75828682101).

213740537739 is a wasteful number, since it uses less digits than its factorization.

213740537739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972050.

The product of its (nonzero) digits is 3333960, while the sum is 51.

The spelling of 213740537739 in words is "two hundred thirteen billion, seven hundred forty million, five hundred thirty-seven thousand, seven hundred thirty-nine".