149788216531 has 8 divisors (see below), whose sum is σ = 149875814160. Its totient is φ = 149700652032.

The previous prime is 149788216499. The next prime is 149788216579. The reversal of 149788216531 is 135612887941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149788216531 - 2⁵ = 149788216499 is a prime.

It is a super-2 number, since 2×149788216531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149788216931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19216971 + ... + 19224763.

It is an arithmetic number, because the mean of its divisors is an integer number (18734476770).

Almost surely, 2^149788216531 is an apocalyptic number.

149788216531 is a deficient number, since it is larger than the sum of its proper divisors (87597629).

149788216531 is an equidigital number, since it uses as much as digits as its factorization.

149788216531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16565.

The product of its digits is 2903040, while the sum is 55.

The spelling of 149788216531 in words is "one hundred forty-nine billion, seven hundred eighty-eight million, two hundred sixteen thousand, five hundred thirty-one".