126355043880 has 512 divisors, whose sum is σ = 501166310400. Its totient is φ = 27999240192.

The previous prime is 126355043869. The next prime is 126355043923. The reversal of 126355043880 is 88340553621.

126355043880 is a `hidden beast` number, since 1 + 2 + 6 + 35 + 504 + 38 + 80 = 666.

It is a super-2 number, since 2×126355043880² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5478132 + ... + 5501148.

It is an arithmetic number, because the mean of its divisors is an integer number (978840450).

Almost surely, 2^126355043880 is an apocalyptic number.

126355043880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126355043880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (250583155200).

126355043880 is an abundant number, since it is smaller than the sum of its proper divisors (374811266520).

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

126355043880 is a wasteful number, since it uses less digits than its factorization.

126355043880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23090 (or 23080 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 126355043880 in words is "one hundred twenty-six billion, three hundred fifty-five million, forty-three thousand, eight hundred eighty".