136431260642 has 16 divisors (see below), whose sum is σ = 205002772800. Its totient is φ = 68097105648.

The previous prime is 136431260633. The next prime is 136431260663. The reversal of 136431260642 is 246062134631.

It is a super-2 number, since 2×136431260642² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136431260596 and 136431260605.

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, 2765153 + ... + 2814059.

It is an arithmetic number, because the mean of its divisors is an integer number (12812673300).

Almost surely, 2^136431260642 is an apocalyptic number.

136431260642 is a deficient number, since it is larger than the sum of its proper divisors (68571512158).

136431260642 is a wasteful number, since it uses less digits than its factorization.

136431260642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51305.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 136431260642 in words is "one hundred thirty-six billion, four hundred thirty-one million, two hundred sixty thousand, six hundred forty-two".