40245001555 has 16 divisors (see below), whose sum is σ = 53470704384. Its totient is φ = 28832237280.

The previous prime is 40245001549. The next prime is 40245001579. The reversal of 40245001555 is 55510054204.

It is not a de Polignac number, because 40245001555 - 2³ = 40245001547 is a prime.

It is a Duffinian 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, 5456967 + ... + 5464336.

It is an arithmetic number, because the mean of its divisors is an integer number (3341919024).

Almost surely, 2^40245001555 is an apocalyptic number.

40245001555 is a deficient number, since it is larger than the sum of its proper divisors (13225702829).

40245001555 is a wasteful number, since it uses less digits than its factorization.

40245001555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10921386.

The product of its (nonzero) digits is 20000, while the sum is 31.

Adding to 40245001555 its reverse (55510054204), we get a palindrome (95755055759).

The spelling of 40245001555 in words is "forty billion, two hundred forty-five million, one thousand, five hundred fifty-five".