1581422064402 has 32 divisors (see below), whose sum is σ = 3262120314624. Its totient is φ = 510816752000.

The previous prime is 1581422064401. The next prime is 1581422064419. The reversal of 1581422064402 is 2044602241851.

It is not an unprimeable number, because it can be changed into a prime (1581422064401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27733299 + ... + 27790262.

It is an arithmetic number, because the mean of its divisors is an integer number (101941259832).

Almost surely, 2^{1581422064402} is an apocalyptic number.

1581422064402 is an abundant number, since it is smaller than the sum of its proper divisors (1680698250222).

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

1581422064402 is a wasteful number, since it uses less digits than its factorization.

1581422064402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55523714.

The product of its (nonzero) digits is 122880, while the sum is 39.

The spelling of 1581422064402 in words is "one trillion, five hundred eighty-one billion, four hundred twenty-two million, sixty-four thousand, four hundred two".