149962257881 has 2 divisors, whose sum is σ = 149962257882. Its totient is φ = 149962257880.

The previous prime is 149962257871. The next prime is 149962257941. The reversal of 149962257881 is 188752269941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128009390656 + 21952867225 = 357784^2 + 148165^2 .

It is a cyclic number.

It is not a de Polignac number, because 149962257881 - 2¹⁸ = 149961995737 is a prime.

It is a super-2 number, since 2×149962257881² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (149962257871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74981128940 + 74981128941.

It is an arithmetic number, because the mean of its divisors is an integer number (74981128941).

Almost surely, 2^149962257881 is an apocalyptic number.

It is an amenable number.

149962257881 is a deficient number, since it is larger than the sum of its proper divisors (1).

149962257881 is an equidigital number, since it uses as much as digits as its factorization.

149962257881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 62.

The spelling of 149962257881 in words is "one hundred forty-nine billion, nine hundred sixty-two million, two hundred fifty-seven thousand, eight hundred eighty-one".