61334402139 has 12 divisors (see below), whose sum is σ = 88617215856. Its totient is φ = 40878949392.

The previous prime is 61334402137. The next prime is 61334402141. The reversal of 61334402139 is 93120443316.

61334402139 is a `hidden beast` number, since 613 + 3 + 4 + 4 + 0 + 2 + 1 + 39 = 666.

It is an interprime number because it is at equal distance from previous prime (61334402137) and next prime (61334402141).

It is not a de Polignac number, because 61334402139 - 2¹ = 61334402137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61334402137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 851124 + ... + 920369.

It is an arithmetic number, because the mean of its divisors is an integer number (7384767988).

Almost surely, 2^61334402139 is an apocalyptic number.

61334402139 is a deficient number, since it is larger than the sum of its proper divisors (27282813717).

61334402139 is a wasteful number, since it uses less digits than its factorization.

61334402139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775346 (or 1775343 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The spelling of 61334402139 in words is "sixty-one billion, three hundred thirty-four million, four hundred two thousand, one hundred thirty-nine".