1143294661390 has 24 divisors (see below), whose sum is σ = 2393919026712. Its totient is φ = 391986740880.

The previous prime is 1143294661387. The next prime is 1143294661393. The reversal of 1143294661390 is 931664923411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1143294661387) and next prime (1143294661393).

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143294661393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1166626716 + ... + 1166627695.

It is an arithmetic number, because the mean of its divisors is an integer number (99746626113).

Almost surely, 2^{1143294661390} is an apocalyptic number.

1143294661390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1143294661390 is an abundant number, since it is smaller than the sum of its proper divisors (1250624365322).

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

1143294661390 is a wasteful number, since it uses less digits than its factorization.

1143294661390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333254432 (or 2333254425 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 49.

The spelling of 1143294661390 in words is "one trillion, one hundred forty-three billion, two hundred ninety-four million, six hundred sixty-one thousand, three hundred ninety".