140523331540 has 24 divisors (see below), whose sum is σ = 295168269312. Its totient is φ = 56196137760.

The previous prime is 140523331477. The next prime is 140523331547. The reversal of 140523331540 is 45133325041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140523331547) 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, 737124 + ... + 907963.

It is an arithmetic number, because the mean of its divisors is an integer number (12298677888).

Almost surely, 2^140523331540 is an apocalyptic number.

140523331540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140523331540 is an abundant number, since it is smaller than the sum of its proper divisors (154644937772).

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

140523331540 is a wasteful number, since it uses less digits than its factorization.

140523331540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649367 (or 1649365 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

Adding to 140523331540 its reverse (45133325041), we get a palindrome (185656656581).

The spelling of 140523331540 in words is "one hundred forty billion, five hundred twenty-three million, three hundred thirty-one thousand, five hundred forty".