40387496891497 has 16 divisors (see below), whose sum is σ = 46260733490560. Its totient is φ = 34540167339648.

The previous prime is 40387496891479. The next prime is 40387496891503. The reversal of 40387496891497 is 79419869478304.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40387496891497 - 2³⁵ = 40353137153129 is a prime.

It is a super-2 number, since 2×40387496891497² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40387496801497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58219279 + ... + 58908907.

It is an arithmetic number, because the mean of its divisors is an integer number (2891295843160).

Almost surely, 2^{40387496891497} is an apocalyptic number.

It is an amenable number.

40387496891497 is a deficient number, since it is larger than the sum of its proper divisors (5873236599063).

40387496891497 is a wasteful number, since it uses less digits than its factorization.

40387496891497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708400.

The product of its (nonzero) digits is 2633637888, while the sum is 79.

The spelling of 40387496891497 in words is "forty trillion, three hundred eighty-seven billion, four hundred ninety-six million, eight hundred ninety-one thousand, four hundred ninety-seven".