1351705453644 has 48 divisors (see below), whose sum is σ = 3881820793088. Its totient is φ = 356493745728.

The previous prime is 1351705453633. The next prime is 1351705453667. The reversal of 1351705453644 is 4463545071531.

It is a junction number, because it is equal to n+sod(n) for n = 1351705453593 and 1351705453602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618911662 + ... + 618913845.

Almost surely, 2^{1351705453644} is an apocalyptic number.

1351705453644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1351705453644 is an abundant number, since it is smaller than the sum of its proper divisors (2530115339444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1351705453644 is a wasteful number, since it uses less digits than its factorization.

1351705453644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237825534 (or 1237825532 counting only the distinct ones).

The product of its (nonzero) digits is 3024000, while the sum is 48.

The spelling of 1351705453644 in words is "one trillion, three hundred fifty-one billion, seven hundred five million, four hundred fifty-three thousand, six hundred forty-four".