1241243651560 has 64 divisors (see below), whose sum is σ = 3207041035200. Its totient is φ = 427605465600.

The previous prime is 1241243651539. The next prime is 1241243651561. The reversal of 1241243651560 is 651563421421.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (1241243651561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74228701 + ... + 74245420.

It is an arithmetic number, because the mean of its divisors is an integer number (50110016175).

Almost surely, 2^{1241243651560} is an apocalyptic number.

1241243651560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1241243651560 is an abundant number, since it is smaller than the sum of its proper divisors (1965797383640).

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

1241243651560 is a wasteful number, since it uses less digits than its factorization.

1241243651560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148474162 (or 148474158 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 1241243651560 in words is "one trillion, two hundred forty-one billion, two hundred forty-three million, six hundred fifty-one thousand, five hundred sixty".