1772370915364 has 72 divisors (see below), whose sum is σ = 3744560171520. Its totient is φ = 718948766592.

The previous prime is 1772370915361. The next prime is 1772370915377. The reversal of 1772370915364 is 4635190732771.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1772370915361) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11008557 + ... + 11168395.

It is an arithmetic number, because the mean of its divisors is an integer number (52007780160).

Almost surely, 2^{1772370915364} is an apocalyptic number.

1772370915364 is a gapful number since it is divisible by the number (14) 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 1772370915364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1872280085760).

1772370915364 is an abundant number, since it is smaller than the sum of its proper divisors (1972189256156).

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

1772370915364 is a wasteful number, since it uses less digits than its factorization.

1772370915364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160985 (or 160964 counting only the distinct ones).

The product of its (nonzero) digits is 6667920, while the sum is 55.

The spelling of 1772370915364 in words is "one trillion, seven hundred seventy-two billion, three hundred seventy million, nine hundred fifteen thousand, three hundred sixty-four".