61122890785 has 16 divisors (see below), whose sum is σ = 80434363392. Its totient is φ = 44220265600.

The previous prime is 61122890779. The next prime is 61122890791. The reversal of 61122890785 is 58709822116.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (61122890779) and next prime (61122890791).

It is not a de Polignac number, because 61122890785 - 2⁹ = 61122890273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2898724 + ... + 2919733.

It is an arithmetic number, because the mean of its divisors is an integer number (5027147712).

Almost surely, 2^61122890785 is an apocalyptic number.

It is an amenable number.

61122890785 is a deficient number, since it is larger than the sum of its proper divisors (19311472607).

61122890785 is a wasteful number, since it uses less digits than its factorization.

61122890785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5818664.

The product of its (nonzero) digits is 483840, while the sum is 49.

The spelling of 61122890785 in words is "sixty-one billion, one hundred twenty-two million, eight hundred ninety thousand, seven hundred eighty-five".