1051655001720 has 64 divisors (see below), whose sum is σ = 3162151872000. Its totient is φ = 279802501248.

The previous prime is 1051655001701. The next prime is 1051655001739. The reversal of 1051655001720 is 271005561501.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1051655001701) and next prime (1051655001739).

It is a super-2 number, since 2×1051655001720² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9928860 + ... + 10034219.

It is an arithmetic number, because the mean of its divisors is an integer number (49408623000).

Almost surely, 2^{1051655001720} is an apocalyptic number.

1051655001720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051655001720 is an abundant number, since it is smaller than the sum of its proper divisors (2110496870280).

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

1051655001720 is a wasteful number, since it uses less digits than its factorization.

1051655001720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19963532 (or 19963528 counting only the distinct ones).

The product of its (nonzero) digits is 10500, while the sum is 33.

The spelling of 1051655001720 in words is "one trillion, fifty-one billion, six hundred fifty-five million, one thousand, seven hundred twenty".