40155421340 has 48 divisors (see below), whose sum is σ = 85298691072. Its totient is φ = 15877886976.

The previous prime is 40155421333. The next prime is 40155421379. The reversal of 40155421340 is 4312455104.

40155421340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40155421340² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 675044 + ... + 732116.

It is an arithmetic number, because the mean of its divisors is an integer number (1777056064).

Almost surely, 2^40155421340 is an apocalyptic number.

It is an amenable number.

40155421340 is an abundant number, since it is smaller than the sum of its proper divisors (45143269732).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40155421340 is a wasteful number, since it uses less digits than its factorization.

40155421340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57486 (or 57484 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 40155421340 its reverse (4312455104), we get a palindrome (44467876444).

The spelling of 40155421340 in words is "forty billion, one hundred fifty-five million, four hundred twenty-one thousand, three hundred forty".