1263097651200 has 672 divisors, whose sum is σ = 5207120294400. Its totient is φ = 262452019200.

The previous prime is 1263097651181. The next prime is 1263097651241. The reversal of 1263097651200 is 21567903621.

It is a tau number, because it is divible by the number of its divisors (672).

It is a super-2 number, since 2×1263097651200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 47295451 + ... + 47322149.

Almost surely, 2^{1263097651200} is an apocalyptic number.

1263097651200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1263097651200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2603560147200).

1263097651200 is an abundant number, since it is smaller than the sum of its proper divisors (3944022643200).

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

1263097651200 is a wasteful number, since it uses less digits than its factorization.

1263097651200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26756 (or 26727 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 1263097651200 in words is "one trillion, two hundred sixty-three billion, ninety-seven million, six hundred fifty-one thousand, two hundred".