52742697638 has 4 divisors (see below), whose sum is σ = 79114046460. Its totient is φ = 26371348818.

The previous prime is 52742697617. The next prime is 52742697671. The reversal of 52742697638 is 83679624725.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13185674408 + ... + 13185674411.

It is an arithmetic number, because the mean of its divisors is an integer number (19778511615).

Almost surely, 2^52742697638 is an apocalyptic number.

52742697638 is a deficient number, since it is larger than the sum of its proper divisors (26371348822).

52742697638 is a wasteful number, since it uses less digits than its factorization.

52742697638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26371348821.

The product of its digits is 30481920, while the sum is 59.

The spelling of 52742697638 in words is "fifty-two billion, seven hundred forty-two million, six hundred ninety-seven thousand, six hundred thirty-eight".