1371234261643 has 16 divisors (see below), whose sum is σ = 1525226572800. Its totient is φ = 1226854062720.

The previous prime is 1371234261641. The next prime is 1371234261671. The reversal of 1371234261643 is 3461624321731.

It is a cyclic number.

It is not a de Polignac number, because 1371234261643 - 2¹ = 1371234261641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1371234261643.

It is not an unprimeable number, because it can be changed into a prime (1371234261641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19825198 + ... + 19894243.

It is an arithmetic number, because the mean of its divisors is an integer number (95326660800).

Almost surely, 2^{1371234261643} is an apocalyptic number.

1371234261643 is a deficient number, since it is larger than the sum of its proper divisors (153992311157).

1371234261643 is a wasteful number, since it uses less digits than its factorization.

1371234261643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39719562.

The product of its digits is 435456, while the sum is 43.

The spelling of 1371234261643 in words is "one trillion, three hundred seventy-one billion, two hundred thirty-four million, two hundred sixty-one thousand, six hundred forty-three".