2061249226780 has 24 divisors (see below), whose sum is σ = 4328812405008. Its totient is φ = 824463685248.

The previous prime is 2061249226759. The next prime is 2061249226837. The reversal of 2061249226780 is 876229421602.

It is a super-2 number, since 2×2061249226780² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1778494 + ... + 2699173.

It is an arithmetic number, because the mean of its divisors is an integer number (180367183542).

Almost surely, 2^{2061249226780} is an apocalyptic number.

2061249226780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2061249226780 is an abundant number, since it is smaller than the sum of its proper divisors (2267563178228).

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

2061249226780 is a wasteful number, since it uses less digits than its factorization.

2061249226780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4500693 (or 4500691 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The spelling of 2061249226780 in words is "two trillion, sixty-one billion, two hundred forty-nine million, two hundred twenty-six thousand, seven hundred eighty".