213607949546 has 4 divisors (see below), whose sum is σ = 320411924322. Its totient is φ = 106803974772.

The previous prime is 213607949509. The next prime is 213607949557. The reversal of 213607949546 is 645949706312.

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

It can be written as a sum of positive squares in only one way, i.e., 136718760025 + 76889189521 = 369755^2 + 277289^2 .

It is a super-2 number, since 2×213607949546² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213607949491 and 213607949500.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53401987385 + ... + 53401987388.

Almost surely, 2^213607949546 is an apocalyptic number.

213607949546 is a deficient number, since it is larger than the sum of its proper divisors (106803974776).

213607949546 is a wasteful number, since it uses less digits than its factorization.

213607949546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106803974775.

The product of its (nonzero) digits is 9797760, while the sum is 56.

The spelling of 213607949546 in words is "two hundred thirteen billion, six hundred seven million, nine hundred forty-nine thousand, five hundred forty-six".