2137780297917 has 40 divisors (see below), whose sum is σ = 3485546293152. Its totient is φ = 1294971300000.

The previous prime is 2137780297909. The next prime is 2137780297973. The reversal of 2137780297917 is 7197920877312.

It is not a de Polignac number, because 2137780297917 - 2³ = 2137780297909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2137780297997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1166667 + ... + 2374167.

Almost surely, 2^{2137780297917} is an apocalyptic number.

2137780297917 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2137780297917 is a deficient number, since it is larger than the sum of its proper divisors (1347765995235).

2137780297917 is a wasteful number, since it uses less digits than its factorization.

2137780297917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1209511 (or 1209502 counting only the distinct ones).

The product of its (nonzero) digits is 18670176, while the sum is 63.

The spelling of 2137780297917 in words is "two trillion, one hundred thirty-seven billion, seven hundred eighty million, two hundred ninety-seven thousand, nine hundred seventeen".