2546117661 has 4 divisors (see below), whose sum is σ = 3394823552. Its totient is φ = 1697411772.

The previous prime is 2546117653. The next prime is 2546117713. The reversal of 2546117661 is 1667116452.

2546117661 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2546117661 - 2³ = 2546117653 is a prime.

It is a super-2 number, since 2×2546117661² = 12965430287312221842, which contains 22 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 (2546117621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424352941 + ... + 424352946.

It is an arithmetic number, because the mean of its divisors is an integer number (848705888).

Almost surely, 2^2546117661 is an apocalyptic number.

It is an amenable number.

2546117661 is a deficient number, since it is larger than the sum of its proper divisors (848705891).

2546117661 is an equidigital number, since it uses as much as digits as its factorization.

2546117661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848705890.

The product of its digits is 60480, while the sum is 39.

The square root of 2546117661 is about 50459.0691650173. The cubic root of 2546117661 is about 1365.5035172293.

The spelling of 2546117661 in words is "two billion, five hundred forty-six million, one hundred seventeen thousand, six hundred sixty-one".