147996009021 has 32 divisors (see below), whose sum is σ = 226011747328. Its totient is φ = 84384115200.

The previous prime is 147996009011. The next prime is 147996009043. The reversal of 147996009021 is 120900699741.

It is not a de Polignac number, because 147996009021 - 2⁹ = 147996008509 is a prime.

It is a super-2 number, since 2×147996009021² (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 (147996009011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20014701 + ... + 20022093.

It is an arithmetic number, because the mean of its divisors is an integer number (7062867104).

Almost surely, 2^147996009021 is an apocalyptic number.

It is an amenable number.

147996009021 is a deficient number, since it is larger than the sum of its proper divisors (78015738307).

147996009021 is a wasteful number, since it uses less digits than its factorization.

147996009021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9361.

The product of its (nonzero) digits is 244944, while the sum is 48.

The spelling of 147996009021 in words is "one hundred forty-seven billion, nine hundred ninety-six million, nine thousand, twenty-one".