20026555994 has 4 divisors (see below), whose sum is σ = 30039833994. Its totient is φ = 10013277996.

The previous prime is 20026555973. The next prime is 20026556003. The reversal of 20026555994 is 49955562002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13536159025 + 6490396969 = 116345^2 + 80563^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5006638997 + ... + 5006639000.

Almost surely, 2^20026555994 is an apocalyptic number.

20026555994 is a deficient number, since it is larger than the sum of its proper divisors (10013278000).

20026555994 is a wasteful number, since it uses less digits than its factorization.

20026555994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10013277999.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 20026555994 in words is "twenty billion, twenty-six million, five hundred fifty-five thousand, nine hundred ninety-four".