1355556431240 has 32 divisors (see below), whose sum is σ = 3327274877760. Its totient is φ = 492929611200.

The previous prime is 1355556431239. The next prime is 1355556431279. The reversal of 1355556431240 is 421346555531.

It is a happy number.

It is a super-2 number, since 2×1355556431240² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 1355556431191 and 1355556431200.

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, 1540404596 + ... + 1540405475.

It is an arithmetic number, because the mean of its divisors is an integer number (103977339930).

Almost surely, 2^{1355556431240} is an apocalyptic number.

1355556431240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1355556431240 is an abundant number, since it is smaller than the sum of its proper divisors (1971718446520).

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

1355556431240 is a wasteful number, since it uses less digits than its factorization.

1355556431240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080810093 (or 3080810089 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 44.

The spelling of 1355556431240 in words is "one trillion, three hundred fifty-five billion, five hundred fifty-six million, four hundred thirty-one thousand, two hundred forty".