1220934757854 has 64 divisors (see below), whose sum is σ = 2857150517760. Its totient is φ = 340541953920.

The previous prime is 1220934757817. The next prime is 1220934757879. The reversal of 1220934757854 is 4587574390221.

It is a super-2 number, since 2×1220934757854² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220934757794 and 1220934757803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3179332 + ... + 3542600.

It is an arithmetic number, because the mean of its divisors is an integer number (44642976840).

Almost surely, 2^{1220934757854} is an apocalyptic number.

1220934757854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220934757854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1428575258880).

1220934757854 is an abundant number, since it is smaller than the sum of its proper divisors (1636215759906).

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

1220934757854 is a wasteful number, since it uses less digits than its factorization.

1220934757854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365185.

The product of its (nonzero) digits is 16934400, while the sum is 57.

The spelling of 1220934757854 in words is "one trillion, two hundred twenty billion, nine hundred thirty-four million, seven hundred fifty-seven thousand, eight hundred fifty-four".