126156652045020 has 528 divisors, whose sum is σ = 432141794255808. Its totient is φ = 30806912010240.

The previous prime is 126156652044991. The next prime is 126156652045051. The reversal of 126156652045020 is 20540256651621.

126156652045020 is a `hidden beast` number, since 1 + 2 + 6 + 1 + 5 + 66 + 520 + 45 + 0 + 20 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 175 ways as a sum of consecutive naturals, for example, 742751505 + ... + 742921335.

Almost surely, 2^{126156652045020} is an apocalyptic number.

126156652045020 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 126156652045020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216070897127904).

126156652045020 is an abundant number, since it is smaller than the sum of its proper divisors (305985142210788).

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

126156652045020 is a wasteful number, since it uses less digits than its factorization.

126156652045020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169924 (or 169895 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 45.

The spelling of 126156652045020 in words is "one hundred twenty-six trillion, one hundred fifty-six billion, six hundred fifty-two million, forty-five thousand, twenty".