40871987951 has 16 divisors (see below), whose sum is σ = 42561000768. Its totient is φ = 39216960000.

The previous prime is 40871987941. The next prime is 40871987953. The reversal of 40871987951 is 15978917804.

It is a cyclic number.

It is not a de Polignac number, because 40871987951 - 2³⁴ = 23692118767 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 (40871987953) 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, 896201 + ... + 940701.

It is an arithmetic number, because the mean of its divisors is an integer number (2660062548).

Almost surely, 2^40871987951 is an apocalyptic number.

40871987951 is a deficient number, since it is larger than the sum of its proper divisors (1689012817).

40871987951 is a wasteful number, since it uses less digits than its factorization.

40871987951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44882.

The product of its (nonzero) digits is 5080320, while the sum is 59.

The spelling of 40871987951 in words is "forty billion, eight hundred seventy-one million, nine hundred eighty-seven thousand, nine hundred fifty-one".