761616161623 has 4 divisors (see below), whose sum is σ = 761735900128. Its totient is φ = 761496423120.

The previous prime is 761616161609. The next prime is 761616161659. The reversal of 761616161623 is 326161616167.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 326161616167 = 31 ⋅10521342457.

It is a cyclic number.

It is not a de Polignac number, because 761616161623 - 2²⁹ = 761079290711 is a prime.

It is a super-3 number, since 3×761616161623³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761616161693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59859711 + ... + 59872432.

It is an arithmetic number, because the mean of its divisors is an integer number (190433975032).

Almost surely, 2^761616161623 is an apocalyptic number.

761616161623 is a deficient number, since it is larger than the sum of its proper divisors (119738505).

761616161623 is a wasteful number, since it uses less digits than its factorization.

761616161623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119738504.

The product of its digits is 326592, while the sum is 46.

The spelling of 761616161623 in words is "seven hundred sixty-one billion, six hundred sixteen million, one hundred sixty-one thousand, six hundred twenty-three".