201249192378544 has 40 divisors (see below), whose sum is σ = 396063600307200. Its totient is φ = 99041687055168.

The previous prime is 201249192378491. The next prime is 201249192378587. The reversal of 201249192378544 is 445873291942102.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75439744 + ... + 78061855.

It is an arithmetic number, because the mean of its divisors is an integer number (9901590007680).

Almost surely, 2^{201249192378544} is an apocalyptic number.

It is an amenable number.

201249192378544 is a deficient number, since it is larger than the sum of its proper divisors (194814407928656).

201249192378544 is a wasteful number, since it uses less digits than its factorization.

201249192378544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153502897 (or 153502891 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 61.

The spelling of 201249192378544 in words is "two hundred one trillion, two hundred forty-nine billion, one hundred ninety-two million, three hundred seventy-eight thousand, five hundred forty-four".