42999649770 has 256 divisors, whose sum is σ = 136160870400. Its totient is φ = 8425401600.

The previous prime is 42999649769. The next prime is 42999649783. The reversal of 42999649770 is 7794699924.

42999649770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42999649770² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3766531 + ... + 3777929.

It is an arithmetic number, because the mean of its divisors is an integer number (531878400).

Almost surely, 2^42999649770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42999649770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68080435200).

42999649770 is an abundant number, since it is smaller than the sum of its proper divisors (93161220630).

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

42999649770 is a wasteful number, since it uses less digits than its factorization.

42999649770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11521.

The product of its (nonzero) digits is 61725888, while the sum is 66.

The spelling of 42999649770 in words is "forty-two billion, nine hundred ninety-nine million, six hundred forty-nine thousand, seven hundred seventy".