40188551513 has 4 divisors (see below), whose sum is σ = 43842056208. Its totient is φ = 36535046820.

The previous prime is 40188551483. The next prime is 40188551539. The reversal of 40188551513 is 31515588104.

40188551513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40188551513 - 2¹⁰ = 40188550489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40188551563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1826752331 + ... + 1826752352.

It is an arithmetic number, because the mean of its divisors is an integer number (10960514052).

Almost surely, 2^40188551513 is an apocalyptic number.

It is an amenable number.

40188551513 is a deficient number, since it is larger than the sum of its proper divisors (3653504695).

40188551513 is a wasteful number, since it uses less digits than its factorization.

40188551513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3653504694.

The product of its (nonzero) digits is 96000, while the sum is 41.

The spelling of 40188551513 in words is "forty billion, one hundred eighty-eight million, five hundred fifty-one thousand, five hundred thirteen".