2637945992494 has 16 divisors (see below), whose sum is σ = 3961063370880. Its totient is φ = 1317591813600.

The previous prime is 2637945992491. The next prime is 2637945992551. The reversal of 2637945992494 is 4942995497362.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2637945992491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20488419 + ... + 20616769.

It is an arithmetic number, because the mean of its divisors is an integer number (247566460680).

Almost surely, 2^{2637945992494} is an apocalyptic number.

2637945992494 is a deficient number, since it is larger than the sum of its proper divisors (1323117378386).

2637945992494 is a wasteful number, since it uses less digits than its factorization.

2637945992494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139035.

The product of its digits is 1058158080, while the sum is 73.

The spelling of 2637945992494 in words is "two trillion, six hundred thirty-seven billion, nine hundred forty-five million, nine hundred ninety-two thousand, four hundred ninety-four".