749491886220 has 1440 divisors, whose sum is σ = 2964051363840. Its totient is φ = 140826470400.

The previous prime is 749491886203. The next prime is 749491886237. The reversal of 749491886220 is 22688194947.

It is an interprime number because it is at equal distance from previous prime (749491886203) and next prime (749491886237).

It is a super-2 number, since 2×749491886220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 10267012104 + ... + 10267012176.

Almost surely, 2^749491886220 is an apocalyptic number.

749491886220 is a gapful number since it is divisible by the number (70) 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 749491886220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1482025681920).

749491886220 is an abundant number, since it is smaller than the sum of its proper divisors (2214559477620).

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

749491886220 is a wasteful number, since it uses less digits than its factorization.

749491886220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 151 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 749491886220 in words is "seven hundred forty-nine billion, four hundred ninety-one million, eight hundred eighty-six thousand, two hundred twenty".