40487331597 has 36 divisors (see below), whose sum is σ = 58224853728. Its totient is φ = 25015132800.

The previous prime is 40487331559. The next prime is 40487331617. The reversal of 40487331597 is 79513378404.

It is a happy number.

It is not a de Polignac number, because 40487331597 - 2¹⁰ = 40487330573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40487331517) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 49922322 + ... + 49923132.

It is an arithmetic number, because the mean of its divisors is an integer number (1617357048).

Almost surely, 2^40487331597 is an apocalyptic number.

It is an amenable number.

40487331597 is a deficient number, since it is larger than the sum of its proper divisors (17737522131).

40487331597 is an frugal number, since it uses more digits than its factorization.

40487331597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 51.

The spelling of 40487331597 in words is "forty billion, four hundred eighty-seven million, three hundred thirty-one thousand, five hundred ninety-seven".