61790257695 has 16 divisors (see below), whose sum is σ = 98867658240. Its totient is φ = 32953722144.

The previous prime is 61790257673. The next prime is 61790257709. The reversal of 61790257695 is 59675209716.

It is not a de Polignac number, because 61790257695 - 2⁷ = 61790257567 is a prime.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 650446 + ... + 739364.

It is an arithmetic number, because the mean of its divisors is an integer number (6179228640).

Almost surely, 2^61790257695 is an apocalyptic number.

61790257695 is a deficient number, since it is larger than the sum of its proper divisors (37077400545).

61790257695 is a wasteful number, since it uses less digits than its factorization.

61790257695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135254.

The product of its (nonzero) digits is 7144200, while the sum is 57.

The spelling of 61790257695 in words is "sixty-one billion, seven hundred ninety million, two hundred fifty-seven thousand, six hundred ninety-five".