1351551233541 has 4 divisors (see below), whose sum is σ = 1802068311392. Its totient is φ = 901034155692.

The previous prime is 1351551233537. The next prime is 1351551233567. The reversal of 1351551233541 is 1453321551531.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1351551233541 - 2² = 1351551233537 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 1351551233541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351551233581) 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, 225258538921 + ... + 225258538926.

It is an arithmetic number, because the mean of its divisors is an integer number (450517077848).

Almost surely, 2^{1351551233541} is an apocalyptic number.

It is an amenable number.

1351551233541 is a deficient number, since it is larger than the sum of its proper divisors (450517077851).

1351551233541 is an equidigital number, since it uses as much as digits as its factorization.

1351551233541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450517077850.

The product of its digits is 135000, while the sum is 39.

The spelling of 1351551233541 in words is "one trillion, three hundred fifty-one billion, five hundred fifty-one million, two hundred thirty-three thousand, five hundred forty-one".