261016063 has 32 divisors (see below), whose sum is σ = 343867392. Its totient is φ = 192175200.

The previous prime is 261016057. The next prime is 261016069. The reversal of 261016063 is 360610162.

It is an interprime number because it is at equal distance from previous prime (261016057) and next prime (261016069).

It is a de Polignac number, because none of the positive numbers 2^k-261016063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261016069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101370 + ... + 103912.

It is an arithmetic number, because the mean of its divisors is an integer number (10745856).

Almost surely, 2^261016063 is an apocalyptic number.

261016063 is a deficient number, since it is larger than the sum of its proper divisors (82851329).

261016063 is a wasteful number, since it uses less digits than its factorization.

261016063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 261016063 is about 16155.9915511243. The cubic root of 261016063 is about 639.0807628439.

The spelling of 261016063 in words is "two hundred sixty-one million, sixteen thousand, sixty-three".