40220400040400 has 60 divisors (see below), whose sum is σ = 98267299478400. Its totient is φ = 15815479328640.

The previous prime is 40220400040397. The next prime is 40220400040537. The reversal of 40220400040400 is 404000402204.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 852103520 + ... + 852150719.

It is an arithmetic number, because the mean of its divisors is an integer number (1637788324640).

Almost surely, 2^{40220400040400} is an apocalyptic number.

40220400040400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40220400040400 is an abundant number, since it is smaller than the sum of its proper divisors (58046899438000).

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

40220400040400 is a wasteful number, since it uses less digits than its factorization.

40220400040400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704254316 (or 1704254305 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 40220400040400 its reverse (404000402204), we get a palindrome (40624400442604).

The spelling of 40220400040400 in words is "forty trillion, two hundred twenty billion, four hundred million, forty thousand, four hundred".