42539418646155 has 48 divisors (see below), whose sum is σ = 74115275270400. Its totient is φ = 22570709832000.

The previous prime is 42539418646121. The next prime is 42539418646183. The reversal of 42539418646155 is 55164681493524.

42539418646155 is a `hidden beast` number, since 4 + 2 + 5 + 3 + 9 + 4 + 1 + 8 + 6 + 4 + 615 + 5 = 666.

It is not a de Polignac number, because 42539418646155 - 2⁶ = 42539418646091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42539418646092 and 42539418646101.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68564080 + ... + 69181730.

It is an arithmetic number, because the mean of its divisors is an integer number (1544068234800).

Almost surely, 2^{42539418646155} is an apocalyptic number.

42539418646155 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42539418646155 is a deficient number, since it is larger than the sum of its proper divisors (31575856624245).

42539418646155 is a wasteful number, since it uses less digits than its factorization.

42539418646155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625552 (or 625549 counting only the distinct ones).

The product of its digits is 124416000, while the sum is 63.

The spelling of 42539418646155 in words is "forty-two trillion, five hundred thirty-nine billion, four hundred eighteen million, six hundred forty-six thousand, one hundred fifty-five".