1156555769430 has 32 divisors (see below), whose sum is σ = 2775765520224. Its totient is φ = 308411352576.

The previous prime is 1156555769371. The next prime is 1156555769431. The reversal of 1156555769430 is 349675556511.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156555769431) 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, 3464964 + ... + 3784056.

It is an arithmetic number, because the mean of its divisors is an integer number (86742672507).

Almost surely, 2^{1156555769430} is an apocalyptic number.

1156555769430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1156555769430 is an abundant number, since it is smaller than the sum of its proper divisors (1619209750794).

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

1156555769430 is a wasteful number, since it uses less digits than its factorization.

1156555769430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439920.

The product of its (nonzero) digits is 17010000, while the sum is 57.

The spelling of 1156555769430 in words is "one trillion, one hundred fifty-six billion, five hundred fifty-five million, seven hundred sixty-nine thousand, four hundred thirty".