2261139381292 has 24 divisors (see below), whose sum is σ = 4328744958720. Its totient is φ = 1024927694160.

The previous prime is 2261139381211. The next prime is 2261139381299. The reversal of 2261139381292 is 2921839311622.

It is a super-2 number, since 2×2261139381292² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2261139381299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71557368 + ... + 71588959.

It is an arithmetic number, because the mean of its divisors is an integer number (180364373280).

Almost surely, 2^{2261139381292} is an apocalyptic number.

2261139381292 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2261139381292 is a deficient number, since it is larger than the sum of its proper divisors (2067605577428).

2261139381292 is a wasteful number, since it uses less digits than its factorization.

2261139381292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143146701 (or 143146699 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

The spelling of 2261139381292 in words is "two trillion, two hundred sixty-one billion, one hundred thirty-nine million, three hundred eighty-one thousand, two hundred ninety-two".