1220115734457 has 8 divisors (see below), whose sum is σ = 1712443136160. Its totient is φ = 770599411200.

The previous prime is 1220115734441. The next prime is 1220115734503. The reversal of 1220115734457 is 7544375110221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1220115734457 - 2⁴ = 1220115734441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220115736457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10702769544 + ... + 10702769657.

It is an arithmetic number, because the mean of its divisors is an integer number (214055392020).

Almost surely, 2^{1220115734457} is an apocalyptic number.

It is an amenable number.

1220115734457 is a deficient number, since it is larger than the sum of its proper divisors (492327401703).

1220115734457 is a wasteful number, since it uses less digits than its factorization.

1220115734457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21405539223.

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 1220115734457 in words is "one trillion, two hundred twenty billion, one hundred fifteen million, seven hundred thirty-four thousand, four hundred fifty-seven".