15140797819738 has 4 divisors (see below), whose sum is σ = 22711196729610. Its totient is φ = 7570398909868.

The previous prime is 15140797819727. The next prime is 15140797819757. The reversal of 15140797819738 is 83791879704151.

It is a happy number.

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., 14753257954009 + 387539865729 = 3840997^2 + 622527^2 .

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 as a sum of consecutive naturals, namely, 3785199454933 + ... + 3785199454936.

Almost surely, 2^{15140797819738} is an apocalyptic number.

15140797819738 is a deficient number, since it is larger than the sum of its proper divisors (7570398909872).

15140797819738 is an equidigital number, since it uses as much as digits as its factorization.

15140797819738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7570398909871.

The product of its (nonzero) digits is 106686720, while the sum is 70.

The spelling of 15140797819738 in words is "fifteen trillion, one hundred forty billion, seven hundred ninety-seven million, eight hundred nineteen thousand, seven hundred thirty-eight".