101581491434 has 16 divisors (see below), whose sum is σ = 160398813600. Its totient is φ = 48115453104.

The previous prime is 101581491373. The next prime is 101581491437. The reversal of 101581491434 is 434194185101.

It is a junction number, because it is equal to n+sod(n) for n = 101581491391 and 101581491400.

It is not an unprimeable number, because it can be changed into a prime (101581491437) 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, 1153349 + ... + 1238295.

It is an arithmetic number, because the mean of its divisors is an integer number (10024925850).

Almost surely, 2^101581491434 is an apocalyptic number.

101581491434 is a deficient number, since it is larger than the sum of its proper divisors (58817322166).

101581491434 is a wasteful number, since it uses less digits than its factorization.

101581491434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116437.

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 101581491434 in words is "one hundred one billion, five hundred eighty-one million, four hundred ninety-one thousand, four hundred thirty-four".