2493470731781 has 16 divisors (see below), whose sum is σ = 2626394730624. Its totient is φ = 2362592743104.

The previous prime is 2493470731733. The next prime is 2493470731811. The reversal of 2493470731781 is 1871370743942.

2493470731781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 2493470731781 - 2³⁴ = 2476290862597 is a prime.

It is a super-2 number, since 2×2493470731781² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2493470791781) 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, 42981911 + ... + 43039883.

It is an arithmetic number, because the mean of its divisors is an integer number (164149670664).

Almost surely, 2^{2493470731781} is an apocalyptic number.

It is an amenable number.

2493470731781 is a deficient number, since it is larger than the sum of its proper divisors (132923998843).

2493470731781 is a wasteful number, since it uses less digits than its factorization.

2493470731781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75580.

The product of its (nonzero) digits is 7112448, while the sum is 56.

The spelling of 2493470731781 in words is "two trillion, four hundred ninety-three billion, four hundred seventy million, seven hundred thirty-one thousand, seven hundred eighty-one".