27912972250 has 32 divisors (see below), whose sum is σ = 52629071040. Its totient is φ = 11084850000.

The previous prime is 27912972223. The next prime is 27912972253. The reversal of 27912972250 is 5227921972.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 27912972250.

It is not an unprimeable number, because it can be changed into a prime (27912972253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 366876 + ... + 436375.

It is an arithmetic number, because the mean of its divisors is an integer number (1644658470).

Almost surely, 2^27912972250 is an apocalyptic number.

27912972250 is a deficient number, since it is larger than the sum of its proper divisors (24716098790).

27912972250 is a wasteful number, since it uses less digits than its factorization.

27912972250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803407 (or 803397 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 27912972250 in words is "twenty-seven billion, nine hundred twelve million, nine hundred seventy-two thousand, two hundred fifty".