61312477266 has 24 divisors (see below), whose sum is σ = 137424519180. Its totient is φ = 19732751136.

The previous prime is 61312477249. The next prime is 61312477273. The reversal of 61312477266 is 66277421316.

61312477266 is a `hidden beast` number, since 6 + 1 + 312 + 4 + 77 + 266 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 53509405041 + 7803072225 = 231321^2 + 88335^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58727905 + ... + 58728948.

Almost surely, 2^61312477266 is an apocalyptic number.

61312477266 is an abundant number, since it is smaller than the sum of its proper divisors (76112041914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61312477266 is a wasteful number, since it uses less digits than its factorization.

61312477266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117456890 (or 117456887 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The spelling of 61312477266 in words is "sixty-one billion, three hundred twelve million, four hundred seventy-seven thousand, two hundred sixty-six".