40496451551 has 4 divisors (see below), whose sum is σ = 40496961600. Its totient is φ = 40495941504.

The previous prime is 40496451539. The next prime is 40496451559. The reversal of 40496451551 is 15515469404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40496451551 - 2¹⁸ = 40496189407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40496451559) 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, 107471 + ... + 304208.

It is an arithmetic number, because the mean of its divisors is an integer number (10124240400).

Almost surely, 2^40496451551 is an apocalyptic number.

40496451551 is a deficient number, since it is larger than the sum of its proper divisors (510049).

40496451551 is an equidigital number, since it uses as much as digits as its factorization.

40496451551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510048.

The product of its (nonzero) digits is 432000, while the sum is 44.

The spelling of 40496451551 in words is "forty billion, four hundred ninety-six million, four hundred fifty-one thousand, five hundred fifty-one".