61213533356 has 18 divisors (see below), whose sum is σ = 111983740932. Its totient is φ = 29276036680.

The previous prime is 61213533307. The next prime is 61213533361. The reversal of 61213533356 is 65333531216.

It is a super-2 number, since 2×61213533356² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14462330 + ... + 14466561.

Almost surely, 2^61213533356 is an apocalyptic number.

It is an amenable number.

61213533356 is a deficient number, since it is larger than the sum of its proper divisors (50770207576).

61213533356 is a wasteful number, since it uses less digits than its factorization.

61213533356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28928941 (or 28928916 counting only the distinct ones).

The product of its digits is 145800, while the sum is 38.

The spelling of 61213533356 in words is "sixty-one billion, two hundred thirteen million, five hundred thirty-three thousand, three hundred fifty-six".