137765306653 has 4 divisors (see below), whose sum is σ = 148362637948. Its totient is φ = 127167975360.

The previous prime is 137765306617. The next prime is 137765306687. The reversal of 137765306653 is 356603567731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8696122009 + 129069184644 = 93253^2 + 359262^2 .

It is a cyclic number.

It is not a de Polignac number, because 137765306653 - 2⁹ = 137765306141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 137765306653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137765306053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5298665628 + ... + 5298665653.

It is an arithmetic number, because the mean of its divisors is an integer number (37090659487).

Almost surely, 2^137765306653 is an apocalyptic number.

137765306653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

137765306653 is a deficient number, since it is larger than the sum of its proper divisors (10597331295).

137765306653 is a wasteful number, since it uses less digits than its factorization.

137765306653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10597331294.

The product of its (nonzero) digits is 7144200, while the sum is 52.

The spelling of 137765306653 in words is "one hundred thirty-seven billion, seven hundred sixty-five million, three hundred six thousand, six hundred fifty-three".