36405378663540 has 24 divisors (see below), whose sum is σ = 101935060258080. Its totient is φ = 9708100976928.

The previous prime is 36405378663539. The next prime is 36405378663551. The reversal of 36405378663540 is 4536687350463.

It is a Harshad number since it is a multiple of its sum of digits (60), and also a Moran number because the ratio is a prime number: 606756311059 = 36405378663540 / (3 + 6 + 4 + 0 + 5 + 3 + 7 + 8 + 6 + 6 + 3 + 5 + 4 + 0).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303378155470 + ... + 303378155589.

It is an arithmetic number, because the mean of its divisors is an integer number (4247294177420).

Almost surely, 2^{36405378663540} is an apocalyptic number.

36405378663540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

36405378663540 is an abundant number, since it is smaller than the sum of its proper divisors (65529681594540).

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

36405378663540 is a wasteful number, since it uses less digits than its factorization.

36405378663540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606756311071 (or 606756311069 counting only the distinct ones).

The product of its (nonzero) digits is 130636800, while the sum is 60.

The spelling of 36405378663540 in words is "thirty-six trillion, four hundred five billion, three hundred seventy-eight million, six hundred sixty-three thousand, five hundred forty".