2251551064442 has 8 divisors (see below), whose sum is σ = 3377394157332. Its totient is φ = 1125753012000.

The previous prime is 2251551064429. The next prime is 2251551064447. The reversal of 2251551064442 is 2444601551522.

It can be written as a sum of positive squares in 2 ways, for example, as 2248257337561 + 3293726881 = 1499419^2 + 57391^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2251551064442.

It is not an unprimeable number, because it can be changed into a prime (2251551064447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11134859 + ... + 11335262.

Almost surely, 2^{2251551064442} is an apocalyptic number.

2251551064442 is a deficient number, since it is larger than the sum of its proper divisors (1125843092890).

2251551064442 is a wasteful number, since it uses less digits than its factorization.

2251551064442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22520224.

The product of its (nonzero) digits is 384000, while the sum is 41.

The spelling of 2251551064442 in words is "two trillion, two hundred fifty-one billion, five hundred fifty-one million, sixty-four thousand, four hundred forty-two".