7157421580905 has 48 divisors (see below), whose sum is σ = 13061367745920. Its totient is φ = 3615768716544.

The previous prime is 7157421580877. The next prime is 7157421580919. The reversal of 7157421580905 is 5090851247517.

7157421580905 is a `hidden beast` number, since 7 + 1 + 57 + 4 + 2 + 1 + 580 + 9 + 0 + 5 = 666.

It is not a de Polignac number, because 7157421580905 - 2⁸ = 7157421580649 is a prime.

It is a Curzon 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 in 47 ways as a sum of consecutive naturals, for example, 4361389 + ... + 5773781.

It is an arithmetic number, because the mean of its divisors is an integer number (272111828040).

Almost surely, 2^{7157421580905} is an apocalyptic number.

It is an amenable number.

7157421580905 is a deficient number, since it is larger than the sum of its proper divisors (5903946165015).

7157421580905 is a wasteful number, since it uses less digits than its factorization.

7157421580905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418350 (or 1418347 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 54.

The spelling of 7157421580905 in words is "seven trillion, one hundred fifty-seven billion, four hundred twenty-one million, five hundred eighty thousand, nine hundred five".