2500638161906 has 8 divisors (see below), whose sum is σ = 3751006976640. Its totient is φ = 1250302503028.

The previous prime is 2500638161899. The next prime is 2500638161933. The reversal of 2500638161906 is 6091618360052.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8099546 + ... + 8402613.

It is an arithmetic number, because the mean of its divisors is an integer number (468875872080).

Almost surely, 2^{2500638161906} is an apocalyptic number.

2500638161906 is a deficient number, since it is larger than the sum of its proper divisors (1250368814734).

2500638161906 is a wasteful number, since it uses less digits than its factorization.

2500638161906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16577928.

The product of its (nonzero) digits is 466560, while the sum is 47.

The spelling of 2500638161906 in words is "two trillion, five hundred billion, six hundred thirty-eight million, one hundred sixty-one thousand, nine hundred six".