2137381945645 has 16 divisors (see below), whose sum is σ = 2572171096320. Its totient is φ = 1705031008384.

The previous prime is 2137381945637. The next prime is 2137381945663. The reversal of 2137381945645 is 5465491837312.

It is a cyclic number.

It is not a de Polignac number, because 2137381945645 - 2³ = 2137381945637 is a prime.

It is a super-3 number, since 3×2137381945645³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2137381945645.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37438512 + ... + 37495558.

It is an arithmetic number, because the mean of its divisors is an integer number (160760693520).

Almost surely, 2^{2137381945645} is an apocalyptic number.

It is an amenable number.

2137381945645 is a deficient number, since it is larger than the sum of its proper divisors (434789150675).

2137381945645 is a wasteful number, since it uses less digits than its factorization.

2137381945645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78284.

The product of its digits is 21772800, while the sum is 58.

The spelling of 2137381945645 in words is "two trillion, one hundred thirty-seven billion, three hundred eighty-one million, nine hundred forty-five thousand, six hundred forty-five".