42545465440621 has 32 divisors (see below), whose sum is σ = 50680055986560. Its totient is φ = 35205166080000.

The previous prime is 42545465440613. The next prime is 42545465440637. The reversal of 42545465440621 is 12604456454524.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42545465440621 - 2³ = 42545465440613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42545465440651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 44297746 + ... + 45247996.

It is an arithmetic number, because the mean of its divisors is an integer number (1583751749580).

Almost surely, 2^{42545465440621} is an apocalyptic number.

It is an amenable number.

42545465440621 is a deficient number, since it is larger than the sum of its proper divisors (8134590545939).

42545465440621 is a wasteful number, since it uses less digits than its factorization.

42545465440621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954637.

The product of its (nonzero) digits is 18432000, while the sum is 52.

The spelling of 42545465440621 in words is "forty-two trillion, five hundred forty-five billion, four hundred sixty-five million, four hundred forty thousand, six hundred twenty-one".