2563421642 has 16 divisors (see below), whose sum is σ = 4033082880. Its totient is φ = 1220534928.

The previous prime is 2563421633. The next prime is 2563421677. The reversal of 2563421642 is 2461243652.

2563421642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2563421642² = 13142261029347952328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365042 + ... + 371997.

It is an arithmetic number, because the mean of its divisors is an integer number (252067680).

Almost surely, 2^2563421642 is an apocalyptic number.

2563421642 is a deficient number, since it is larger than the sum of its proper divisors (1469661238).

2563421642 is a wasteful number, since it uses less digits than its factorization.

2563421642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737125.

The product of its digits is 69120, while the sum is 35.

The square root of 2563421642 is about 50630.2443407100. The cubic root of 2563421642 is about 1368.5899574154.

The spelling of 2563421642 in words is "two billion, five hundred sixty-three million, four hundred twenty-one thousand, six hundred forty-two".