7770755121 has 8 divisors (see below), whose sum is σ = 10378078464. Its totient is φ = 5171967600.

The previous prime is 7770755119. The next prime is 7770755123. The reversal of 7770755121 is 1215570777.

It is an interprime number because it is at equal distance from previous prime (7770755119) and next prime (7770755123).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7770755121 - 2¹ = 7770755119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7770755123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2131830 + ... + 2135471.

It is an arithmetic number, because the mean of its divisors is an integer number (1297259808).

Almost surely, 2^7770755121 is an apocalyptic number.

It is an amenable number.

7770755121 is a deficient number, since it is larger than the sum of its proper divisors (2607323343).

7770755121 is a wasteful number, since it uses less digits than its factorization.

7770755121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4267911.

The product of its (nonzero) digits is 120050, while the sum is 42.

The square root of 7770755121 is about 88151.8866559304. The cubic root of 7770755121 is about 1980.7108219697.

The spelling of 7770755121 in words is "seven billion, seven hundred seventy million, seven hundred fifty-five thousand, one hundred twenty-one".