40390797017400 has 192 divisors, whose sum is σ = 127288596445920. Its totient is φ = 10592269670400.

The previous prime is 40390797017399. The next prime is 40390797017407. The reversal of 40390797017400 is 471079709304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40390797017407) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 195084334 + ... + 195291266.

Almost surely, 2^{40390797017400} is an apocalyptic number.

40390797017400 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 40390797017400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63644298222960).

40390797017400 is an abundant number, since it is smaller than the sum of its proper divisors (86897799428520).

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

40390797017400 is a wasteful number, since it uses less digits than its factorization.

40390797017400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212346 (or 212337 counting only the distinct ones).

The product of its (nonzero) digits is 1333584, while the sum is 51.

The spelling of 40390797017400 in words is "forty trillion, three hundred ninety billion, seven hundred ninety-seven million, seventeen thousand, four hundred".