10451139538394 has 4 divisors (see below), whose sum is σ = 15676709307594. Its totient is φ = 5225569769196.

The previous prime is 10451139538381. The next prime is 10451139538439. The reversal of 10451139538394 is 49383593115401.

It is a happy number.

10451139538394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 7469491243369 + 2981648295025 = 2733037^2 + 1726745^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2612784884597 + ... + 2612784884600.

Almost surely, 2^{10451139538394} is an apocalyptic number.

10451139538394 is a deficient number, since it is larger than the sum of its proper divisors (5225569769200).

10451139538394 is an equidigital number, since it uses as much as digits as its factorization.

10451139538394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5225569769199.

The product of its (nonzero) digits is 6998400, while the sum is 56.

The spelling of 10451139538394 in words is "ten trillion, four hundred fifty-one billion, one hundred thirty-nine million, five hundred thirty-eight thousand, three hundred ninety-four".