1012578474450 has 48 divisors (see below), whose sum is σ = 2536057967616. Its totient is φ = 267347448000.

The previous prime is 1012578474419. The next prime is 1012578474487. The reversal of 1012578474450 is 544748752101.

1012578474450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 1012578474450.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33403282 + ... + 33433581.

It is an arithmetic number, because the mean of its divisors is an integer number (52834540992).

Almost surely, 2^{1012578474450} is an apocalyptic number.

1012578474450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1012578474450 is an abundant number, since it is smaller than the sum of its proper divisors (1523479493166).

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

1012578474450 is a wasteful number, since it uses less digits than its factorization.

1012578474450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66836979 (or 66836974 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 48.

The spelling of 1012578474450 in words is "one trillion, twelve billion, five hundred seventy-eight million, four hundred seventy-four thousand, four hundred fifty".