1351295887820 has 24 divisors (see below), whose sum is σ = 2863755510000. Its totient is φ = 535559470272.

The previous prime is 1351295887793. The next prime is 1351295887841. The reversal of 1351295887820 is 287885921531.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1351295887820.

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, 309928070 + ... + 309932429.

It is an arithmetic number, because the mean of its divisors is an integer number (119323146250).

Almost surely, 2^{1351295887820} is an apocalyptic number.

1351295887820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1351295887820 is an abundant number, since it is smaller than the sum of its proper divisors (1512459622180).

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

1351295887820 is a wasteful number, since it uses less digits than its factorization.

1351295887820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619860617 (or 619860615 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 59.

The spelling of 1351295887820 in words is "one trillion, three hundred fifty-one billion, two hundred ninety-five million, eight hundred eighty-seven thousand, eight hundred twenty".