1551243263356 has 12 divisors (see below), whose sum is σ = 2715716233440. Its totient is φ = 775324339520.

The previous prime is 1551243263351. The next prime is 1551243263387. The reversal of 1551243263356 is 6533623421551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1551243263351) 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, 74311300 + ... + 74332171.

It is an arithmetic number, because the mean of its divisors is an integer number (226309686120).

Almost surely, 2^{1551243263356} is an apocalyptic number.

It is an amenable number.

1551243263356 is a deficient number, since it is larger than the sum of its proper divisors (1164472970084).

1551243263356 is a wasteful number, since it uses less digits than its factorization.

1551243263356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148646084 (or 148646082 counting only the distinct ones).

The product of its digits is 1944000, while the sum is 46.

The spelling of 1551243263356 in words is "one trillion, five hundred fifty-one billion, two hundred forty-three million, two hundred sixty-three thousand, three hundred fifty-six".