261072771452 has 48 divisors (see below), whose sum is σ = 476654250240. Its totient is φ = 125009673600.

The previous prime is 261072771451. The next prime is 261072771457. The reversal of 261072771452 is 254177270162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261072771451) 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, 6666593 + ... + 6705639.

It is an arithmetic number, because the mean of its divisors is an integer number (9930296880).

Almost surely, 2^261072771452 is an apocalyptic number.

It is an amenable number.

261072771452 is a deficient number, since it is larger than the sum of its proper divisors (215581478788).

261072771452 is a wasteful number, since it uses less digits than its factorization.

261072771452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39842 (or 39840 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 44.

The spelling of 261072771452 in words is "two hundred sixty-one billion, seventy-two million, seven hundred seventy-one thousand, four hundred fifty-two".