40128987262 has 16 divisors (see below), whose sum is σ = 74084284512. Its totient is φ = 15875203680.

The previous prime is 40128987209. The next prime is 40128987263. The reversal of 40128987262 is 26278982104.

It is a super-2 number, since 2×40128987262² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40128987263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110244289 + ... + 110244652.

It is an arithmetic number, because the mean of its divisors is an integer number (4630267782).

Almost surely, 2^40128987262 is an apocalyptic number.

40128987262 is a deficient number, since it is larger than the sum of its proper divisors (33955297250).

40128987262 is a wasteful number, since it uses less digits than its factorization.

40128987262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220488963.

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 40128987262 in words is "forty billion, one hundred twenty-eight million, nine hundred eighty-seven thousand, two hundred sixty-two".