213607949545 has 8 divisors (see below), whose sum is σ = 256335704640. Its totient is φ = 170882249520.

The previous prime is 213607949509. The next prime is 213607949557. The reversal of 213607949545 is 545949706312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213607949545 - 2¹⁵ = 213607916777 is a prime.

It is a super-2 number, since 2×213607949545² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275005 + ... + 709114.

It is an arithmetic number, because the mean of its divisors is an integer number (32041963080).

Almost surely, 2^213607949545 is an apocalyptic number.

It is an amenable number.

213607949545 is a deficient number, since it is larger than the sum of its proper divisors (42727755095).

213607949545 is an equidigital number, since it uses as much as digits as its factorization.

213607949545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027535.

The product of its (nonzero) digits is 8164800, while the sum is 55.

The spelling of 213607949545 in words is "two hundred thirteen billion, six hundred seven million, nine hundred forty-nine thousand, five hundred forty-five".