90155336642 has 32 divisors (see below), whose sum is σ = 162870988800. Its totient is φ = 36562872528.

The previous prime is 90155336639. The next prime is 90155336659. The reversal of 90155336642 is 24663355109.

It is a junction number, because it is equal to n+sod(n) for n = 90155336593 and 90155336602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42959 + ... + 426797.

It is an arithmetic number, because the mean of its divisors is an integer number (5089718400).

Almost surely, 2^90155336642 is an apocalyptic number.

90155336642 is a deficient number, since it is larger than the sum of its proper divisors (72715652158).

90155336642 is a wasteful number, since it uses less digits than its factorization.

90155336642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384750.

The product of its (nonzero) digits is 583200, while the sum is 44.

The spelling of 90155336642 in words is "ninety billion, one hundred fifty-five million, three hundred thirty-six thousand, six hundred forty-two".