1237478385472 has 224 divisors, whose sum is σ = 3057753600000. Its totient is φ = 495483158016.

The previous prime is 1237478385463. The next prime is 1237478385523. The reversal of 1237478385472 is 2745838747321.

It is a tau number, because it is divible by the number of its divisors (224).

It is a self number, because there is not a number n which added to its sum of digits gives 1237478385472.

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, 21682029 + ... + 21739027.

Almost surely, 2^{1237478385472} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1237478385472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1528876800000).

1237478385472 is an abundant number, since it is smaller than the sum of its proper divisors (1820275214528).

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

1237478385472 is an equidigital number, since it uses as much as digits as its factorization.

1237478385472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57098 (or 57074 counting only the distinct ones).

The product of its digits is 63221760, while the sum is 61.

The spelling of 1237478385472 in words is "one trillion, two hundred thirty-seven billion, four hundred seventy-eight million, three hundred eighty-five thousand, four hundred seventy-two".