7445240405655 has 16 divisors (see below), whose sum is σ = 12828721930080. Its totient is φ = 3665349122688.

The previous prime is 7445240405627. The next prime is 7445240405699. The reversal of 7445240405655 is 5565040425447.

It is not a de Polignac number, because 7445240405655 - 2¹⁹ = 7445239881367 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7445240405598 and 7445240405607.

It is a congruent number.

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, 19090359820 + ... + 19090360209.

It is an arithmetic number, because the mean of its divisors is an integer number (801795120630).

Almost surely, 2^{7445240405655} is an apocalyptic number.

7445240405655 is a deficient number, since it is larger than the sum of its proper divisors (5383481524425).

7445240405655 is a wasteful number, since it uses less digits than its factorization.

7445240405655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38180720050.

The product of its (nonzero) digits is 13440000, while the sum is 51.

The spelling of 7445240405655 in words is "seven trillion, four hundred forty-five billion, two hundred forty million, four hundred five thousand, six hundred fifty-five".