1351050621660 has 72 divisors (see below), whose sum is σ = 4339256712336. Its totient is φ = 339087214080.

The previous prime is 1351050621653. The next prime is 1351050621691. The reversal of 1351050621660 is 661260501531.

1351050621660 is a `hidden beast` number, since 13 + 5 + 10 + 5 + 0 + 621 + 6 + 6 + 0 = 666.

It is a super-2 number, since 2×1351050621660² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220756846 + ... + 220762965.

It is an arithmetic number, because the mean of its divisors is an integer number (60267454338).

Almost surely, 2^{1351050621660} is an apocalyptic number.

1351050621660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1351050621660 is an abundant number, since it is smaller than the sum of its proper divisors (2988206090676).

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

1351050621660 is a wasteful number, since it uses less digits than its factorization.

1351050621660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441519843 (or 441519838 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The spelling of 1351050621660 in words is "one trillion, three hundred fifty-one billion, fifty million, six hundred twenty-one thousand, six hundred sixty".