1371472013557 has 4 divisors (see below), whose sum is σ = 1372259764876. Its totient is φ = 1370684262240.

The previous prime is 1371472013519. The next prime is 1371472013581. The reversal of 1371472013557 is 7553102741731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 223758326961 + 1147713686596 = 473031^2 + 1071314^2 .

It is a cyclic number.

It is not a de Polignac number, because 1371472013557 - 2³⁵ = 1337112275189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1371472013357) 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, 393873048 + ... + 393876529.

It is an arithmetic number, because the mean of its divisors is an integer number (343064941219).

Almost surely, 2^{1371472013557} is an apocalyptic number.

It is an amenable number.

1371472013557 is a deficient number, since it is larger than the sum of its proper divisors (787751319).

1371472013557 is an equidigital number, since it uses as much as digits as its factorization.

1371472013557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787751318.

The product of its (nonzero) digits is 617400, while the sum is 46.

The spelling of 1371472013557 in words is "one trillion, three hundred seventy-one billion, four hundred seventy-two million, thirteen thousand, five hundred fifty-seven".