1401573643600 has 60 divisors (see below), whose sum is σ = 3626302282876. Its totient is φ = 517504112640.

The previous prime is 1401573643579. The next prime is 1401573643621. The reversal of 1401573643600 is 63463751041.

It is an interprime number because it is at equal distance from previous prime (1401573643579) and next prime (1401573643621).

It can be written as a sum of positive squares in 6 ways, for example, as 28233408784 + 1373340234816 = 168028^2 + 1171896^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 134761497 + ... + 134771896.

Almost surely, 2^{1401573643600} is an apocalyptic number.

1401573643600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1401573643600 is an abundant number, since it is smaller than the sum of its proper divisors (2224728639276).

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

1401573643600 is a wasteful number, since it uses less digits than its factorization.

1401573643600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269533424 (or 269533413 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 1401573643600 in words is "one trillion, four hundred one billion, five hundred seventy-three million, six hundred forty-three thousand, six hundred".