201072154994 has 16 divisors (see below), whose sum is σ = 312042634200. Its totient is φ = 97058701824.

The previous prime is 201072154939. The next prime is 201072155003. The reversal of 201072154994 is 499451270102.

It can be written as a sum of positive squares in 4 ways, for example, as 162090786025 + 38981368969 = 402605^2 + 197437^2 .

It is a Curzon number.

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, 359012 + ... + 728720.

Almost surely, 2^201072154994 is an apocalyptic number.

201072154994 is a deficient number, since it is larger than the sum of its proper divisors (110970479206).

201072154994 is a wasteful number, since it uses less digits than its factorization.

201072154994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379117.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 201072154994 in words is "two hundred one billion, seventy-two million, one hundred fifty-four thousand, nine hundred ninety-four".