2601561377 has 8 divisors (see below), whose sum is σ = 2832916800. Its totient is φ = 2379649104.

The previous prime is 2601561359. The next prime is 2601561407. The reversal of 2601561377 is 7731651062.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2601561377 - 2¹⁴ = 2601544993 is a prime.

It is a super-2 number, since 2×2601561377² = 13536243196596272258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2601561377.

It is not an unprimeable number, because it can be changed into a prime (2601561317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2360213 + ... + 2361314.

It is an arithmetic number, because the mean of its divisors is an integer number (354114600).

Almost surely, 2^2601561377 is an apocalyptic number.

It is an amenable number.

2601561377 is a deficient number, since it is larger than the sum of its proper divisors (231355423).

2601561377 is a wasteful number, since it uses less digits than its factorization.

2601561377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4721575.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 2601561377 is about 51005.5033991431. The cubic root of 2601561377 is about 1375.3440685186.

The spelling of 2601561377 in words is "two billion, six hundred one million, five hundred sixty-one thousand, three hundred seventy-seven".