40931523642 has 48 divisors (see below), whose sum is σ = 87863050080. Its totient is φ = 12706624224.

The previous prime is 40931523641. The next prime is 40931523673. The reversal of 40931523642 is 24632513904.

It is a self number, because there is not a number n which added to its sum of digits gives 40931523642.

It is not an unprimeable number, because it can be changed into a prime (40931523641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32353 + ... + 287940.

It is an arithmetic number, because the mean of its divisors is an integer number (1830480210).

Almost surely, 2^40931523642 is an apocalyptic number.

40931523642 is an abundant number, since it is smaller than the sum of its proper divisors (46931526438).

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

40931523642 is a wasteful number, since it uses less digits than its factorization.

40931523642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320395 (or 320376 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 40931523642 in words is "forty billion, nine hundred thirty-one million, five hundred twenty-three thousand, six hundred forty-two".