1357457644993 has 4 divisors (see below), whose sum is σ = 1357564183488. Its totient is φ = 1357351106500.

The previous prime is 1357457644979. The next prime is 1357457644997. The reversal of 1357457644993 is 3994467547531.

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 a cyclic number.

It is not a de Polignac number, because 1357457644993 - 2¹⁷ = 1357457513921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1357457644997) 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, 53250133 + ... + 53275618.

It is an arithmetic number, because the mean of its divisors is an integer number (339391045872).

Almost surely, 2^{1357457644993} is an apocalyptic number.

It is an amenable number.

1357457644993 is a deficient number, since it is larger than the sum of its proper divisors (106538495).

1357457644993 is a wasteful number, since it uses less digits than its factorization.

1357457644993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106538494.

The product of its digits is 342921600, while the sum is 67.

The spelling of 1357457644993 in words is "one trillion, three hundred fifty-seven billion, four hundred fifty-seven million, six hundred forty-four thousand, nine hundred ninety-three".