149967451631 has 2 divisors, whose sum is σ = 149967451632. Its totient is φ = 149967451630.

The previous prime is 149967451607. The next prime is 149967451633. The reversal of 149967451631 is 136154769941.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149967451631 is a prime.

It is a super-2 number, since 2×149967451631² (a number of 23 digits) contains 22 as substring.

Together with 149967451633, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149967451633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74983725815 + 74983725816.

It is an arithmetic number, because the mean of its divisors is an integer number (74983725816).

Almost surely, 2^149967451631 is an apocalyptic number.

149967451631 is a deficient number, since it is larger than the sum of its proper divisors (1).

149967451631 is an equidigital number, since it uses as much as digits as its factorization.

149967451631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 56.

The spelling of 149967451631 in words is "one hundred forty-nine billion, nine hundred sixty-seven million, four hundred fifty-one thousand, six hundred thirty-one".