36397009137840 has 320 divisors, whose sum is σ = 128679379992576. Its totient is φ = 8430824964096.

The previous prime is 36397009137803. The next prime is 36397009137859. The reversal of 36397009137840 is 4873190079363.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 332134737 + ... + 332244303.

Almost surely, 2^{36397009137840} is an apocalyptic number.

36397009137840 is a gapful number since it is divisible by the number (30) 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 36397009137840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64339689996288).

36397009137840 is an abundant number, since it is smaller than the sum of its proper divisors (92282370854736).

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

36397009137840 is a wasteful number, since it uses less digits than its factorization.

36397009137840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115876 (or 115870 counting only the distinct ones).

The product of its (nonzero) digits is 20575296, while the sum is 60.

The spelling of 36397009137840 in words is "thirty-six trillion, three hundred ninety-seven billion, nine million, one hundred thirty-seven thousand, eight hundred forty".