2401261665 has 32 divisors (see below), whose sum is σ = 4196707200. Its totient is φ = 1162744320.

The previous prime is 2401261651. The next prime is 2401261691. The reversal of 2401261665 is 5661621042.

It is not a de Polignac number, because 2401261665 - 2⁵ = 2401261633 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124491 + ... + 142479.

It is an arithmetic number, because the mean of its divisors is an integer number (131147100).

Almost surely, 2^2401261665 is an apocalyptic number.

It is an amenable number.

2401261665 is a deficient number, since it is larger than the sum of its proper divisors (1795445535).

2401261665 is a wasteful number, since it uses less digits than its factorization.

2401261665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18817.

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 2401261665 is about 49002.6699782777. The cubic root of 2401261665 is about 1339.1004702104.

The spelling of 2401261665 in words is "two billion, four hundred one million, two hundred sixty-one thousand, six hundred sixty-five".