42550015636649 has 16 divisors (see below), whose sum is σ = 43539909594048. Its totient is φ = 41572148001792.

The previous prime is 42550015636633. The next prime is 42550015636663. The reversal of 42550015636649 is 94663651005524.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42550015636649 - 2⁴ = 42550015636633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42550015636594 and 42550015636603.

It is not an unprimeable number, because it can be changed into a prime (42550015636679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8500829 + ... + 12544485.

It is an arithmetic number, because the mean of its divisors is an integer number (2721244349628).

Almost surely, 2^{42550015636649} is an apocalyptic number.

It is an amenable number.

42550015636649 is a deficient number, since it is larger than the sum of its proper divisors (989893957399).

42550015636649 is a wasteful number, since it uses less digits than its factorization.

42550015636649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4045144.

The product of its (nonzero) digits is 23328000, while the sum is 56.

The spelling of 42550015636649 in words is "forty-two trillion, five hundred fifty billion, fifteen million, six hundred thirty-six thousand, six hundred forty-nine".