8261195541772 has 6 divisors (see below), whose sum is σ = 14457092198108. Its totient is φ = 4130597770884.

The previous prime is 8261195541743. The next prime is 8261195541787. The reversal of 8261195541772 is 2771455911628.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032649442718 + ... + 1032649442725.

Almost surely, 2^{8261195541772} is an apocalyptic number.

It is an amenable number.

8261195541772 is a deficient number, since it is larger than the sum of its proper divisors (6195896656336).

8261195541772 is a wasteful number, since it uses less digits than its factorization.

8261195541772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065298885447 (or 2065298885445 counting only the distinct ones).

The product of its digits is 8467200, while the sum is 58.

The spelling of 8261195541772 in words is "eight trillion, two hundred sixty-one billion, one hundred ninety-five million, five hundred forty-one thousand, seven hundred seventy-two".