149971952643 has 8 divisors (see below), whose sum is σ = 199965811728. Its totient is φ = 99979697664.

The previous prime is 149971952621. The next prime is 149971952653. The reversal of 149971952643 is 346259179941.

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

It is a de Polignac number, because none of the positive numbers 2^k-149971952643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149971952653) 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, 162630 + ... + 571307.

It is an arithmetic number, because the mean of its divisors is an integer number (24995726466).

Almost surely, 2^149971952643 is an apocalyptic number.

149971952643 is a deficient number, since it is larger than the sum of its proper divisors (49993859085).

149971952643 is an equidigital number, since it uses as much as digits as its factorization.

149971952643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802053.

The product of its digits is 14696640, while the sum is 60.

The spelling of 149971952643 in words is "one hundred forty-nine billion, nine hundred seventy-one million, nine hundred fifty-two thousand, six hundred forty-three".