20770647701440 has 112 divisors (see below), whose sum is σ = 60873975271872. Its totient is φ = 6573567614976.

The previous prime is 20770647701423. The next prime is 20770647701443. The reversal of 20770647701440 is 4410774607702.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20770647701443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356609749 + ... + 356667988.

It is an arithmetic number, because the mean of its divisors is an integer number (543517636356).

Almost surely, 2^{20770647701440} is an apocalyptic number.

20770647701440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20770647701440 is an abundant number, since it is smaller than the sum of its proper divisors (40103327570432).

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

20770647701440 is a wasteful number, since it uses less digits than its factorization.

20770647701440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713277774 (or 713277764 counting only the distinct ones).

The product of its (nonzero) digits is 1843968, while the sum is 49.

The spelling of 20770647701440 in words is "twenty trillion, seven hundred seventy billion, six hundred forty-seven million, seven hundred one thousand, four hundred forty".