77133302540 has 24 divisors (see below), whose sum is σ = 185119926432. Its totient is φ = 26445703680.

The previous prime is 77133302503. The next prime is 77133302563. The reversal of 77133302540 is 4520333177.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 77133302540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275475941 + ... + 275476220.

It is an arithmetic number, because the mean of its divisors is an integer number (7713330268).

Almost surely, 2^77133302540 is an apocalyptic number.

77133302540 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

77133302540 is an abundant number, since it is smaller than the sum of its proper divisors (107986623892).

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

77133302540 is a wasteful number, since it uses less digits than its factorization.

77133302540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550952177 (or 550952175 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 35.

The spelling of 77133302540 in words is "seventy-seven billion, one hundred thirty-three million, three hundred two thousand, five hundred forty".