163426640510740 has 24 divisors (see below), whose sum is σ = 352471511157192. Its totient is φ = 63603881712000.

The previous prime is 163426640510689. The next prime is 163426640510761. The reversal of 163426640510740 is 47015046624361.

It can be written as a sum of positive squares in 4 ways, for example, as 90193540832784 + 73233099677956 = 9497028^2 + 8557634^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110423405011 + ... + 110423406490.

It is an arithmetic number, because the mean of its divisors is an integer number (14686312964883).

Almost surely, 2^{163426640510740} is an apocalyptic number.

163426640510740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163426640510740 is an abundant number, since it is smaller than the sum of its proper divisors (189044870646452).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

163426640510740 is a wasteful number, since it uses less digits than its factorization.

163426640510740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220846811547 (or 220846811545 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 49.

The spelling of 163426640510740 in words is "one hundred sixty-three trillion, four hundred twenty-six billion, six hundred forty million, five hundred ten thousand, seven hundred forty".