40371313661280 has 576 divisors, whose sum is σ = 162938052845568. Its totient is φ = 8909783101440.

The previous prime is 40371313661233. The next prime is 40371313661323. The reversal of 40371313661280 is 8216631317304.

40371313661280 is a `hidden beast` number, since 4 + 0 + 3 + 7 + 1 + 3 + 1 + 366 + 1 + 280 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 48444609 + ... + 49270911.

It is an arithmetic number, because the mean of its divisors is an integer number (282878563968).

Almost surely, 2^{40371313661280} is an apocalyptic number.

40371313661280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40371313661280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81469026422784).

40371313661280 is an abundant number, since it is smaller than the sum of its proper divisors (122566739184288).

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

40371313661280 is a wasteful number, since it uses less digits than its factorization.

40371313661280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826499 (or 826488 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

Adding to 40371313661280 its reverse (8216631317304), we get a palindrome (48587944978584).

The spelling of 40371313661280 in words is "forty trillion, three hundred seventy-one billion, three hundred thirteen million, six hundred sixty-one thousand, two hundred eighty".