426647621400 has 576 divisors, whose sum is σ = 1789289644800. Its totient is φ = 81833241600.

The previous prime is 426647621383. The next prime is 426647621417. The reversal of 426647621400 is 4126746624.

It is an interprime number because it is at equal distance from previous prime (426647621383) and next prime (426647621417).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 6574311 + ... + 6638889.

Almost surely, 2^426647621400 is an apocalyptic number.

426647621400 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 426647621400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (894644822400).

426647621400 is an abundant number, since it is smaller than the sum of its proper divisors (1362642023400).

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

426647621400 is a wasteful number, since it uses less digits than its factorization.

426647621400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64640 (or 64620 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 42.

The spelling of 426647621400 in words is "four hundred twenty-six billion, six hundred forty-seven million, six hundred twenty-one thousand, four hundred".