42745556615 has 8 divisors (see below), whose sum is σ = 51340927680. Its totient is φ = 34165605472.

The previous prime is 42745556587. The next prime is 42745556621. The reversal of 42745556615 is 51665554724.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42745556615 - 2¹² = 42745552519 is a prime.

It is a super-2 number, since 2×42745556615² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 3848879 + ... + 3859968.

It is an arithmetic number, because the mean of its divisors is an integer number (6417615960).

Almost surely, 2^42745556615 is an apocalyptic number.

42745556615 is a deficient number, since it is larger than the sum of its proper divisors (8595371065).

42745556615 is a wasteful number, since it uses less digits than its factorization.

42745556615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7709961.

The product of its digits is 5040000, while the sum is 50.

The spelling of 42745556615 in words is "forty-two billion, seven hundred forty-five million, five hundred fifty-six thousand, six hundred fifteen".