802557391946 has 16 divisors (see below), whose sum is σ = 1268474645760. Its totient is φ = 379775135520.

The previous prime is 802557391943. The next prime is 802557391949. The reversal of 802557391946 is 649193755208.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (802557391943) and next prime (802557391949).

It is not an unprimeable number, because it can be changed into a prime (802557391943) 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, 10618211 + ... + 10693526.

It is an arithmetic number, because the mean of its divisors is an integer number (79279665360).

It is a 2-persistent number, because it is pandigital, and so is 2⋅802557391946 = 1605114783892, but 3⋅802557391946 = 2407672175838 is not.

Almost surely, 2^802557391946 is an apocalyptic number.

802557391946 is a deficient number, since it is larger than the sum of its proper divisors (465917253814).

802557391946 is a wasteful number, since it uses less digits than its factorization.

802557391946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21312749.

The product of its (nonzero) digits is 16329600, while the sum is 59.

The spelling of 802557391946 in words is "eight hundred two billion, five hundred fifty-seven million, three hundred ninety-one thousand, nine hundred forty-six".