61848653139 has 200 divisors, whose sum is σ = 122987652480. Its totient is φ = 30683100672.

The previous prime is 61848653137. The next prime is 61848653159. The reversal of 61848653139 is 93135684816.

61848653139 is a `hidden beast` number, since 61 + 8 + 48 + 6 + 531 + 3 + 9 = 666.

It is not a de Polignac number, because 61848653139 - 2¹ = 61848653137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61848653137) by changing a digit.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 42979582 + ... + 42981020.

Almost surely, 2^61848653139 is an apocalyptic number.

61848653139 is a deficient number, since it is larger than the sum of its proper divisors (61138999341).

61848653139 is a wasteful number, since it uses less digits than its factorization.

61848653139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1509 (or 1479 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The spelling of 61848653139 in words is "sixty-one billion, eight hundred forty-eight million, six hundred fifty-three thousand, one hundred thirty-nine".