1400378757376 has 27 divisors (see below), whose sum is σ = 2795325079813. Its totient is φ = 700179911680.

The previous prime is 1400378757373. The next prime is 1400378757383. The reversal of 1400378757376 is 6737578730041.

It is a happy number.

The square root of 1400378757376 is 1183376.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1281822494976 + 118556262400 = 1132176^2 + 344320^2 .

It is a super-2 number, since 2×1400378757376² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1400378757376.

It is not an unprimeable number, because it can be changed into a prime (1400378757373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 18897036 + ... + 18970996.

Almost surely, 2^{1400378757376} is an apocalyptic number.

1400378757376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

1400378757376 is the 1183376-th square number.

It is an amenable number.

1400378757376 is a deficient number, since it is larger than the sum of its proper divisors (1394946322437).

1400378757376 is an frugal number, since it uses more digits than its factorization.

1400378757376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147938 (or 73963 counting only the distinct ones).

The product of its (nonzero) digits is 20744640, while the sum is 58.

The spelling of 1400378757376 in words is "one trillion, four hundred billion, three hundred seventy-eight million, seven hundred fifty-seven thousand, three hundred seventy-six".