122651351342440 has 16 divisors (see below), whose sum is σ = 275965540520580. Its totient is φ = 49060540536960.

The previous prime is 122651351342369. The next prime is 122651351342441. The reversal of 122651351342440 is 44243153156221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 117475553440996 + 5175797901444 = 10838614^2 + 2275038^2 .

It is a super-2 number, since 2×122651351342440² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122651351342441) 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, 1533141891741 + ... + 1533141891820.

Almost surely, 2^{122651351342440} is an apocalyptic number.

122651351342440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122651351342440 is an abundant number, since it is smaller than the sum of its proper divisors (153314189178140).

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

122651351342440 is a wasteful number, since it uses less digits than its factorization.

122651351342440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066283783572 (or 3066283783568 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 43.

The spelling of 122651351342440 in words is "one hundred twenty-two trillion, six hundred fifty-one billion, three hundred fifty-one million, three hundred forty-two thousand, four hundred forty".