20951038126880 has 96 divisors (see below), whose sum is σ = 49746824749440. Its totient is φ = 8338186321920.

The previous prime is 20951038126867. The next prime is 20951038126903. The reversal of 20951038126880 is 8862183015902.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26833856 + ... + 27603584.

It is an arithmetic number, because the mean of its divisors is an integer number (518196091140).

Almost surely, 2^{20951038126880} is an apocalyptic number.

20951038126880 is a gapful number since it is divisible by the number (20) 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 20951038126880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24873412374720).

20951038126880 is an abundant number, since it is smaller than the sum of its proper divisors (28795786622560).

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

20951038126880 is a wasteful number, since it uses less digits than its factorization.

20951038126880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770602 (or 770594 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 53.

The spelling of 20951038126880 in words is "twenty trillion, nine hundred fifty-one billion, thirty-eight million, one hundred twenty-six thousand, eight hundred eighty".