15381908602834 has 4 divisors (see below), whose sum is σ = 23072862904254. Its totient is φ = 7690954301416.

The previous prime is 15381908602783. The next prime is 15381908602843. The reversal of 15381908602834 is 43820680918351.

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., 11829795665809 + 3552112937025 = 3439447^2 + 1884705^2 .

It is a super-2 number, since 2×15381908602834² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3845477150707 + ... + 3845477150710.

Almost surely, 2^{15381908602834} is an apocalyptic number.

15381908602834 is a deficient number, since it is larger than the sum of its proper divisors (7690954301420).

15381908602834 is an equidigital number, since it uses as much as digits as its factorization.

15381908602834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7690954301419.

The product of its (nonzero) digits is 9953280, while the sum is 58.

The spelling of 15381908602834 in words is "fifteen trillion, three hundred eighty-one billion, nine hundred eight million, six hundred two thousand, eight hundred thirty-four".