40542531951 has 8 divisors (see below), whose sum is σ = 54179847040. Its totient is φ = 26966785752.

The previous prime is 40542531937. The next prime is 40542531973. The reversal of 40542531951 is 15913524504.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40542531951 - 2⁷ = 40542531823 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 (40542531901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15390685 + ... + 15393318.

It is an arithmetic number, because the mean of its divisors is an integer number (6772480880).

Almost surely, 2^40542531951 is an apocalyptic number.

40542531951 is a deficient number, since it is larger than the sum of its proper divisors (13637315089).

40542531951 is a wasteful number, since it uses less digits than its factorization.

40542531951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30784445.

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 40542531951 in words is "forty billion, five hundred forty-two million, five hundred thirty-one thousand, nine hundred fifty-one".