1294137643740 has 48 divisors (see below), whose sum is σ = 3677668778112. Its totient is φ = 339952574016.

The previous prime is 1294137643709. The next prime is 1294137643751. The reversal of 1294137643740 is 473467314921.

It is a super-2 number, since 2×1294137643740² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160958374 + ... + 160966413.

It is an arithmetic number, because the mean of its divisors is an integer number (76618099544).

Almost surely, 2^{1294137643740} is an apocalyptic number.

1294137643740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1294137643740 is an abundant number, since it is smaller than the sum of its proper divisors (2383531134372).

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

1294137643740 is a wasteful number, since it uses less digits than its factorization.

1294137643740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321924866 (or 321924864 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 51.

The spelling of 1294137643740 in words is "one trillion, two hundred ninety-four billion, one hundred thirty-seven million, six hundred forty-three thousand, seven hundred forty".