61156338306 has 16 divisors (see below), whose sum is σ = 139785916224. Its totient is φ = 17473239504.

The previous prime is 61156338263. The next prime is 61156338311. The reversal of 61156338306 is 60383365116.

It is a happy number.

61156338306 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1456103293 = 61156338306 / (6 + 1 + 1 + 5 + 6 + 3 + 3 + 8 + 3 + 0 + 6).

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, 728051605 + ... + 728051688.

It is an arithmetic number, because the mean of its divisors is an integer number (8736619764).

Almost surely, 2^61156338306 is an apocalyptic number.

61156338306 is an abundant number, since it is smaller than the sum of its proper divisors (78629577918).

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

61156338306 is a wasteful number, since it uses less digits than its factorization.

61156338306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456103305.

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 61156338306 in words is "sixty-one billion, one hundred fifty-six million, three hundred thirty-eight thousand, three hundred six".