147991503534 has 24 divisors (see below), whose sum is σ = 344306764008. Its totient is φ = 42283286640.

The previous prime is 147991503533. The next prime is 147991503581. The reversal of 147991503534 is 435305199741.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147991503533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 251685937 + ... + 251686524.

It is an arithmetic number, because the mean of its divisors is an integer number (14346115167).

Almost surely, 2^147991503534 is an apocalyptic number.

147991503534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

147991503534 is an abundant number, since it is smaller than the sum of its proper divisors (196315260474).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

147991503534 is a wasteful number, since it uses less digits than its factorization.

147991503534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503372480 (or 503372473 counting only the distinct ones).

The product of its (nonzero) digits is 2041200, while the sum is 51.

The spelling of 147991503534 in words is "one hundred forty-seven billion, nine hundred ninety-one million, five hundred three thousand, five hundred thirty-four".