20174509977386 has 4 divisors (see below), whose sum is σ = 30261764966082. Its totient is φ = 10087254988692.

The previous prime is 20174509977379. The next prime is 20174509977407. The reversal of 20174509977386 is 68377990547102.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 20146497595225 + 28012382161 = 4488485^2 + 167369^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5043627494345 + ... + 5043627494348.

It is a 1-persistent number, because it is pandigital, but 2⋅20174509977386 = 40349019954772 is not.

Almost surely, 2^{20174509977386} is an apocalyptic number.

20174509977386 is a deficient number, since it is larger than the sum of its proper divisors (10087254988696).

20174509977386 is a wasteful number, since it uses less digits than its factorization.

20174509977386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10087254988695.

The product of its (nonzero) digits is 160030080, while the sum is 68.

The spelling of 20174509977386 in words is "twenty trillion, one hundred seventy-four billion, five hundred nine million, nine hundred seventy-seven thousand, three hundred eighty-six".