1400265252640 has 48 divisors (see below), whose sum is σ = 3388812691320. Its totient is φ = 546444974080.

The previous prime is 1400265252637. The next prime is 1400265252719. The reversal of 1400265252640 is 462525620041.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1083705984144 + 316559268496 = 1041012^2 + 562636^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1400265252640.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106720975 + ... + 106734094.

Almost surely, 2^{1400265252640} is an apocalyptic number.

1400265252640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400265252640 is an abundant number, since it is smaller than the sum of its proper divisors (1988547438680).

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

1400265252640 is a wasteful number, since it uses less digits than its factorization.

1400265252640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213455125 (or 213455117 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 1400265252640 in words is "one trillion, four hundred billion, two hundred sixty-five million, two hundred fifty-two thousand, six hundred forty".