42645505515 has 16 divisors (see below), whose sum is σ = 68235395328. Its totient is φ = 22743407456.

The previous prime is 42645505489. The next prime is 42645505541. The reversal of 42645505515 is 51550554624.

It is an interprime number because it is at equal distance from previous prime (42645505489) and next prime (42645505541).

It is a cyclic number.

It is not a de Polignac number, because 42645505515 - 2¹⁸ = 42645243371 is a prime.

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, 660712 + ... + 722378.

It is an arithmetic number, because the mean of its divisors is an integer number (4264712208).

Almost surely, 2^42645505515 is an apocalyptic number.

42645505515 is a deficient number, since it is larger than the sum of its proper divisors (25589889813).

42645505515 is a wasteful number, since it uses less digits than its factorization.

42645505515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107778.

The product of its (nonzero) digits is 600000, while the sum is 42.

The spelling of 42645505515 in words is "forty-two billion, six hundred forty-five million, five hundred five thousand, five hundred fifteen".