117837502477 has 4 divisors (see below), whose sum is σ = 118125614140. Its totient is φ = 117549390816.

The previous prime is 117837502463. The next prime is 117837502487. The reversal of 117837502477 is 774205738711.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49719634441 + 68117868036 = 222979^2 + 260994^2 .

It is a cyclic number.

It is not a de Polignac number, because 117837502477 - 2¹⁵ = 117837469709 is a prime.

It is a super-2 number, since 2×117837502477² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117837502427) 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, 144055218 + ... + 144056035.

It is an arithmetic number, because the mean of its divisors is an integer number (29531403535).

Almost surely, 2^117837502477 is an apocalyptic number.

It is an amenable number.

117837502477 is a deficient number, since it is larger than the sum of its proper divisors (288111663).

117837502477 is an equidigital number, since it uses as much as digits as its factorization.

117837502477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288111662.

The product of its (nonzero) digits is 2304960, while the sum is 52.

The spelling of 117837502477 in words is "one hundred seventeen billion, eight hundred thirty-seven million, five hundred two thousand, four hundred seventy-seven".