61277790693 has 32 divisors (see below), whose sum is σ = 95306041600. Its totient is φ = 35006791680.

The previous prime is 61277790671. The next prime is 61277790751. The reversal of 61277790693 is 39609777216.

It is not a de Polignac number, because 61277790693 - 2²¹ = 61275693541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61277790653) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 7504533 + ... + 7512693.

It is an arithmetic number, because the mean of its divisors is an integer number (2978313800).

Almost surely, 2^61277790693 is an apocalyptic number.

It is an amenable number.

61277790693 is a deficient number, since it is larger than the sum of its proper divisors (34028250907).

61277790693 is an equidigital number, since it uses as much as digits as its factorization.

61277790693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15482 (or 15468 counting only the distinct ones).

The product of its (nonzero) digits is 6001128, while the sum is 57.

The spelling of 61277790693 in words is "sixty-one billion, two hundred seventy-seven million, seven hundred ninety thousand, six hundred ninety-three".