147836881631 has 4 divisors (see below), whose sum is σ = 147876938664. Its totient is φ = 147796824600.

The previous prime is 147836881613. The next prime is 147836881651. The reversal of 147836881631 is 136188638741.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147836881631 is a prime.

It is a super-2 number, since 2×147836881631² (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 (147836881651) 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, 20022980 + ... + 20030361.

It is an arithmetic number, because the mean of its divisors is an integer number (36969234666).

Almost surely, 2^147836881631 is an apocalyptic number.

147836881631 is a deficient number, since it is larger than the sum of its proper divisors (40057033).

147836881631 is an equidigital number, since it uses as much as digits as its factorization.

147836881631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40057032.

The product of its digits is 4644864, while the sum is 56.

The spelling of 147836881631 in words is "one hundred forty-seven billion, eight hundred thirty-six million, eight hundred eighty-one thousand, six hundred thirty-one".