1293257473820 has 48 divisors (see below), whose sum is σ = 2925470943360. Its totient is φ = 477392994816.

The previous prime is 1293257473819. The next prime is 1293257473843. The reversal of 1293257473820 is 283747523921.

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, 450824 + ... + 1670256.

It is an arithmetic number, because the mean of its divisors is an integer number (60947311320).

Almost surely, 2^{1293257473820} is an apocalyptic number.

1293257473820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1293257473820 is an abundant number, since it is smaller than the sum of its proper divisors (1632213469540).

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

1293257473820 is a wasteful number, since it uses less digits than its factorization.

1293257473820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223534 (or 1223532 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 53.

The spelling of 1293257473820 in words is "one trillion, two hundred ninety-three billion, two hundred fifty-seven million, four hundred seventy-three thousand, eight hundred twenty".