47862917642 has 4 divisors (see below), whose sum is σ = 71794376466. Its totient is φ = 23931458820.

The previous prime is 47862917639. The next prime is 47862917647. The reversal of 47862917642 is 24671926874.

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., 41440337761 + 6422579881 = 203569^2 + 80141^2 .

It is not an unprimeable number, because it can be changed into a prime (47862917647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11965729409 + ... + 11965729412.

Almost surely, 2^47862917642 is an apocalyptic number.

47862917642 is a deficient number, since it is larger than the sum of its proper divisors (23931458824).

47862917642 is a wasteful number, since it uses less digits than its factorization.

47862917642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23931458823.

The product of its digits is 8128512, while the sum is 56.

The spelling of 47862917642 in words is "forty-seven billion, eight hundred sixty-two million, nine hundred seventeen thousand, six hundred forty-two".