61355068775 has 96 divisors (see below), whose sum is σ = 102435110400. Its totient is φ = 35206617600.

The previous prime is 61355068763. The next prime is 61355068807. The reversal of 61355068775 is 57786055316.

It is a happy number.

It is not a de Polignac number, because 61355068775 - 2³⁰ = 60281326951 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9481241 + ... + 9487709.

It is an arithmetic number, because the mean of its divisors is an integer number (1067032400).

Almost surely, 2^61355068775 is an apocalyptic number.

61355068775 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

61355068775 is a deficient number, since it is larger than the sum of its proper divisors (41080041625).

61355068775 is a wasteful number, since it uses less digits than its factorization.

61355068775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6889 (or 6884 counting only the distinct ones).

The product of its (nonzero) digits is 5292000, while the sum is 53.

The spelling of 61355068775 in words is "sixty-one billion, three hundred fifty-five million, sixty-eight thousand, seven hundred seventy-five".