126149031648 has 72 divisors (see below), whose sum is σ = 358770707568. Its totient is φ = 42045645312.

The previous prime is 126149031601. The next prime is 126149031689. The reversal of 126149031648 is 846130941621.

126149031648 is a `hidden beast` number, since 12 + 61 + 490 + 31 + 64 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5539261 + ... + 5561987.

It is an arithmetic number, because the mean of its divisors is an integer number (4982926494).

Almost surely, 2^126149031648 is an apocalyptic number.

126149031648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

126149031648 is an abundant number, since it is smaller than the sum of its proper divisors (232621675920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126149031648 is a wasteful number, since it uses less digits than its factorization.

126149031648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42016 (or 42005 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 126149031648 in words is "one hundred twenty-six billion, one hundred forty-nine million, thirty-one thousand, six hundred forty-eight".