61262371906 has 4 divisors (see below), whose sum is σ = 91893557862. Its totient is φ = 30631185952.

The previous prime is 61262371871. The next prime is 61262371909. The reversal of 61262371906 is 60917326216.

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., 53882015625 + 7380356281 = 232125^2 + 85909^2 .

It is not an unprimeable number, because it can be changed into a prime (61262371909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15315592975 + ... + 15315592978.

Almost surely, 2^61262371906 is an apocalyptic number.

61262371906 is a deficient number, since it is larger than the sum of its proper divisors (30631185956).

61262371906 is a wasteful number, since it uses less digits than its factorization.

61262371906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30631185955.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 61262371906 in words is "sixty-one billion, two hundred sixty-two million, three hundred seventy-one thousand, nine hundred six".