140436455430 has 64 divisors (see below), whose sum is σ = 344986905600. Its totient is φ = 36571121664.

The previous prime is 140436455413. The next prime is 140436455431. The reversal of 140436455430 is 34554634041.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140436455431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 522177 + ... + 744003.

It is an arithmetic number, because the mean of its divisors is an integer number (5390420400).

Almost surely, 2^140436455430 is an apocalyptic number.

140436455430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 140436455430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172493452800).

140436455430 is an abundant number, since it is smaller than the sum of its proper divisors (204550450170).

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

140436455430 is a wasteful number, since it uses less digits than its factorization.

140436455430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222333.

The product of its (nonzero) digits is 345600, while the sum is 39.

The spelling of 140436455430 in words is "one hundred forty billion, four hundred thirty-six million, four hundred fifty-five thousand, four hundred thirty".