1000437557497 has 4 divisors (see below), whose sum is σ = 1143357208576. Its totient is φ = 857517906420.

The previous prime is 1000437557477. The next prime is 1000437557549. The reversal of 1000437557497 is 7947557340001.

It is a happy number.

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 1000437557497 - 2¹¹ = 1000437555449 is a prime.

It is a super-3 number, since 3×1000437557497³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000437557447) 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, 71459825529 + ... + 71459825542.

It is an arithmetic number, because the mean of its divisors is an integer number (285839302144).

Almost surely, 2^{1000437557497} is an apocalyptic number.

It is an amenable number.

1000437557497 is a deficient number, since it is larger than the sum of its proper divisors (142919651079).

1000437557497 is an equidigital number, since it uses as much as digits as its factorization.

1000437557497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142919651078.

The product of its (nonzero) digits is 3704400, while the sum is 52.

The spelling of 1000437557497 in words is "one trillion, four hundred thirty-seven million, five hundred fifty-seven thousand, four hundred ninety-seven".