73028251512 has 128 divisors (see below), whose sum is σ = 205627464000. Its totient is φ = 24311135232.

The previous prime is 73028251463. The next prime is 73028251607. The reversal of 73028251512 is 21515282037.

73028251512 is a `hidden beast` number, since 73 + 0 + 28 + 2 + 51 + 512 = 666.

It is a super-2 number, since 2×73028251512² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 16251538 + ... + 16256030.

Almost surely, 2^73028251512 is an apocalyptic number.

73028251512 is a gapful number since it is divisible by the number (72) 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 73028251512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102813732000).

73028251512 is an abundant number, since it is smaller than the sum of its proper divisors (132599212488).

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

73028251512 is an equidigital number, since it uses as much as digits as its factorization.

73028251512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5449 (or 5427 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The spelling of 73028251512 in words is "seventy-three billion, twenty-eight million, two hundred fifty-one thousand, five hundred twelve".