2663551401 has 32 divisors (see below), whose sum is σ = 4133452800. Its totient is φ = 1494089280.

The previous prime is 2663551399. The next prime is 2663551463. The reversal of 2663551401 is 1041553662.

It is not a de Polignac number, because 2663551401 - 2¹ = 2663551399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2663551481) 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, 1323486 + ... + 1325496.

It is an arithmetic number, because the mean of its divisors is an integer number (129170400).

Almost surely, 2^2663551401 is an apocalyptic number.

2663551401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2663551401 is a deficient number, since it is larger than the sum of its proper divisors (1469901399).

2663551401 is a wasteful number, since it uses less digits than its factorization.

2663551401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3149.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 2663551401 is about 51609.6057047523. The cubic root of 2663551401 is about 1386.1823371407.

The spelling of 2663551401 in words is "two billion, six hundred sixty-three million, five hundred fifty-one thousand, four hundred one".